顺序栈的C语言程序
c语言顺序结构程序例题

C语言顺序结构程序例题一、介绍顺序结构是C语言中最简单的程序结构,也是最基本的程序设计思路。
它按照代码的编写顺序,依次执行每一条语句,没有条件、分支或循环的判断。
本文将通过一些例题来帮助读者理解和掌握C语言顺序结构的使用方法。
二、示例代码1.题目一描述:编写一个程序,实现两个整数相加,并输出结果。
代码:#i nc lu de<s td io.h>i n tm ai n(){i n tn um1,nu m2,s um;p r in tf("请输入两个整数:\n");s c an f("%d%d",&num1,&nu m2);s u m=nu m1+n um2;p r in tf("它们的和为:%d\n",su m);r e tu rn0;}2.题目二描述:编写一个程序,计算圆的面积和周长。
代码:#i nc lu de<s td io.h>#d ef in eP I3.14159i n tm ai n(){f l oa tr ad iu s,ar ea,p er im et er;p r in tf("请输入圆的半径:\n");s c an f("%f",&ra diu s);a r ea=P I*ra di us*ra d iu s;p e ri me te r=2*PI*ra d iu s;p r in tf("圆的面积为:%.2f\n",ar ea);p r in tf("圆的周长为:%.2f\n",pe rim e te r); r e tu rn0;}3.题目三描述:编写一个程序,将华氏温度转换为摄氏温度。
代码:#i nc lu de<s td io.h>i n tm ai n(){f l oa tf ah re nh ei t,c e ls iu s;p r in tf("请输入华氏温度:\n");s c an f("%f",&fa hre n he it);c e ls iu s=(f ah re nhe i t-32)*5/9;p r in tf("摄氏温度为:%.2f\n",ce lsi u s);r e tu rn0;}三、运行结果1.题目一请输入两个整数:57它们的和为:122.题目二请输入圆的半径:2.5圆的面积为:19.63圆的周长为:15.713.题目三请输入华氏温度:75.5摄氏温度为:24.17四、总结通过以上例题可以看出,在C语言中,顺序结构是最简单、最基础的程序结构。
数据结构(C语言)第3章 栈和队列

Data Structure
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栈的顺序存储(顺序栈)
利用一组地址连续的存储单元依次存放自栈底到栈顶的数 据元素。 结构定义: #define STACK_INIT_SIZE 100; // 存储空间初始分配量 #define STACKINCREMENT 10; // 存储空间分配增量 typedef struct { SElemType *base; // 存储空间基址 SElemType *top; // 栈顶指针 int stacksize; // 当前已分配的存储空间,以元素位单位 } SqStack;
解决方案2:
顺序栈单向延伸——使用一个数组来存储两个栈
Data Structure 2013-8-6 Page 21
两栈共享空间 两栈共享空间:使用一个数组来存储两个栈,让一个 栈的栈底为该数组的始端,另一个栈的栈底为该数组 的末端,两个栈从各自的端点向中间延伸。
Data Structure
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链栈需要加头结点吗? 链栈不需要附设头结点。
Data Structure
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栈的链接存储结构及实现
Data Structure
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GetTop(S, &e) 初始条件:栈 S 已存在且非空。 操作结果:用 e 返回S的栈顶元素。 Push(&S, e) 初始条件:栈 S 已存在。 操作结果:插入元素 e 为新的栈顶元素。 Pop(&S, &e) 初始条件:栈 S 已存在且非空。 操作结果:删除 S 的栈顶元素,并用 e 返回其值。
Data Structure
《数据结构(C语言)》第3章 栈和队列

栈
❖ 栈的顺序存储与操作 ❖ 1.顺序栈的定义
(1) 栈的静态分配顺序存储结构描述 ② top为整数且指向栈顶元素 当top为整数且指向栈顶元素时,栈空、入栈、栈满 及出栈的情况如图3.2所示。初始化条件为 S.top=-1。
(a) 栈空S.top==-1 (b) 元素入栈S.stack[++S.top]=e (c) 栈满S.top>=StackSize-1 (d) 元素出栈e=S.stack[S.top--]
/*栈顶指针,可以指向栈顶
元素的下一个位置或者指向栈顶元素*/
int StackSize; /*当前分配的栈可使用的以 元素为单位的最大存储容量*/
}SqStack;
/*顺序栈*/
Data structures
栈
❖ 栈的顺序存储与操作 ❖ 1.顺序栈的定义
(2) 栈的动态分配顺序存储结构描述 ① top为指针且指向栈顶元素的下一个位置 当top为指针且指向栈顶元素的下一个位置时,栈空 、入栈、栈满及出栈的情况如图3.3所示。初始化条 件为S.top=S.base。
…,n-1,n≥0} 数据关系:R={< ai-1,ai>| ai-1,ai∈D,i=1,2
,…,n-1 } 约定an-1端为栈顶,a0端为栈底 基本操作:
(1) 初始化操作:InitStack(&S) 需要条件:栈S没有被创建过 操作结果:构建一个空的栈S (2) 销毁栈:DestroyStack(&S) 需要条件:栈S已经被创建 操作结果:清空栈S的所有值,释放栈S占用的内存空间
return 1;
}
Data structures
栈
c语言堆栈和队列函数大全

C语言堆栈和队列函数大全一.顺序栈1.宏定义#include<stdio.h>#include<stdlib.h>#define MAXSIZE ****#define datatype ****2.结构体typedef struct{datatype data[MAXSIZE];int top;}Seqstack;3.基本函数Seqstack *Init_Seqstack()/*置空栈函数(初始化)1.先决条件:无;2.函数作用:首先建立栈空间,然后初始化栈顶指针,返回栈s的地址*/{Seqstack *s;s=(Seqstack *)malloc(sizeof(Seqstack));s->top=-1;return s;}int Empty_Seqstack(Seqstack *s) /*判栈空函数1.先决条件:初始化顺序栈;2.函数作用:判断栈是否为空,空返回1,不空返回0*/ {if(s->top==-1) return 1;else return 0;}int Push_Seqstack(Seqstack *s,datatype x) /*入栈函数1.先决条件:初始化顺序栈2.函数作用:将数据x入栈,栈满则不能,成功返回1,因栈满失败返回0*/ {if(s->top==MAXSIZE-1)return 0;s->top=s->top+1;s->data[s->top]=x;return 1;}int Pop_Seqstack(Seqstack *s,datatype *x) acidity, mL.; M--calibration of the molar concentration of sodium hydroxide standard solution, moI/L; V--amount of the volume of sodium hydroxide standard solution, Ml; M--the weight of the sample, g. Such as poor meets the requirements, take the arithmetic mean of the second determination as a result. Results one decimal. 6, allowing differential analyst simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than 1.0. 1, definitions and principles for determination of ash in starches, starch and ash: starch samples of ash the residue obtainedafter weight. Original sample residue weight of sample weight or weight expressed as a percentage of the dry weight of the sample. Samples ofash at 900 ? high temperature until ashing sample ... The Crucible: determination of Platinum or other conditions of the affected material, capacity of 50mL. Dryer: has effectively adequate drying agent and-perforated metal plate or porcelain. Ashing furnaces: device for controlling and regulating temperature, offers 900 incineration temperature of 25 c. Analytical balance. Electric hot plate or Bunsen. 3, crucible of analysis steps preparation: Crucible must first wash with boiling dilute hydrochloric acid, then wash with a lot of water and then rinse with distilled water. Wash the Crucible within ashing furnace, heated at 900 to 25 ? 30min, and in the desiccator to cool to room temperature and then weighing,/*出栈函数1.先决条件:初始化顺序栈2.函数作用:从栈中出一个数据,并将其存放到x中,成功返回1,因栈空失败返回0*/{if(s->top==-1)return 0;*x=s->data[s->top];s->top--;return 1;}int Top_Seqstack(Seqstack *s,datatype *x)/*取栈顶元素函数1.先决条件:初始化顺序栈2.函数作用:取栈顶元素,并把其存放到x中,成功返回1,因栈空失败返回0*/{if(s->top==-1)return 0;*x=s->data[s->top];return 1;}int Printf_Seqstack(Seqstack *s) /*遍历顺序栈函数1.先决条件:初始化顺序栈2.函数作用:遍历顺序栈,成功返回1*/ {int i,j=0;for(i=s->top;i>=0;i--){printf("%d ",s->data[i]);/*因datatype不同而不同*/j++;if(j%10==0)printf("\n");}printf("\n");return 1;}int Conversation_Seqstack(int N,int r) /*数制转换函数(顺序栈)1.先决条件:具有置空栈,入栈,出栈函数2.函数作用:将N转换为r进制的数*/{Seqstack *s;datatype x;printf("%d转为%d进制的数为:",N,r);/*以后可以删除去*/s=Init_Seqstack();do{Push_Seqstack(s,N%r);N=N/r;acidity, mL.; M--calibration of the molar concentration of sodium hydroxide standard solution, moI/L; V--amount of the volume of sodium hydroxide standard solution, Ml; M--the weight of the sample, g. Such as poor meets the requirements, take the arithmetic mean of the second determination as a result. Results one decimal. 6, allowing differential analyst simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than 1.0. 1, definitions and principles for determination of ash in starches, starch and ash: starch samples of ash the residue obtained after weight. Original sample residue weight of sample weight or weight expressed as a percentage of the dry weight of the sample. Samples of ash at 900 ? high temperature until ashing sample ... The Crucible: determination of Platinum or other conditions of the affected material, capacity of 50mL. Dryer: has effectivelyadequate drying agent and-perforated metal plate or porcelain. Ashing furnaces: device for controlling and regulating temperature, offers 900 incineration temperature of 25 c. Analytical balance. Electric hot plate or Bunsen. 3, crucible of analysis steps preparation: Crucible mustfirst wash with boiling dilute hydrochloric acid, then wash with a lot of water and then rinse with distilled water. Wash the Crucible within ashing furnace, heated at 900 to 25 ? 30min, and in the desiccator to cool to room temperature and then weighing,}while(N);while(Pop_Seqstack(s,&x)){if(x>=10)/*为了能转为十进制以上的*/printf("%c",x+55);elseprintf("%d",x);}free(s);/*释放顺序栈*/printf("\n");return 1;}4.主函数int main(){Seqstack *s;int choice;datatype x;do{printf("************************************************************ ****\n");printf("1.置空栈 2.判栈空 3.入栈 4.出栈 5.取栈顶元素 6.遍历 7.退出\n");printf("************************************************************ ****\n");printf("请输入选择(1~7):");scanf("%d",&choice);getchar();switch(choice){case 1:s=Init_Seqstack();if(s)printf("置空栈成功!\n");break;case 2:if(Empty_Seqstack(s))printf("此为空栈.\n");elseprintf("此不为空栈.\n");;break;case 3:printf("请输入一个整数:");scanf("%d",&x);if(Push_Seqstack(s,x))printf("入栈成功.\n");elseprintf("栈已满,无法入栈.\n");;break;case 4:if(Pop_Seqstack(s,&x)) acidity, mL.; M--calibration of the molar concentration of sodium hydroxide standard solution, moI/L; V--amount of the volume of sodium hydroxide standard solution, Ml; M--the weight of the sample, g. Such as poor meets the requirements, take the arithmetic mean of the second determination as a result. Results one decimal. 6, allowing differential analyst simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than 1.0. 1, definitions and principles for determination of ash in starches, starch and ash: starch samples of ash the residue obtained after weight. Original sample residue weight of sample weight or weight expressed as a percentage of the dry weight of the sample. Samples of ash at 900 ? high temperature until ashing sample ... The Crucible: determination of Platinum or other conditions of the affected material, capacity of 50mL. Dryer: has effectively adequate drying agent and-perforated metal plate or porcelain. Ashing furnaces: device for controlling and regulating temperature, offers 900 incineration temperature of 25 c. Analytical balance. Electric hot plate or Bunsen. 3, crucible of analysis steps preparation: Crucible must first wash with boiling dilute hydrochloric acid, then wash with a lot of water and then rinse with distilled water.Wash the Crucible within ashing furnace, heated at 900 to 25 ? 30min, and in the desiccator to cool to room temperature and then weighing, printf("出栈成功,出栈元素为:%d\n",x);elseprintf("出栈失败,因栈为空.\n");break;case 5:if(Top_Seqstack(s,&x))printf("取栈顶元素成功,栈顶元素为:%d\n",x);elseprintf("取栈顶元素失败,因栈为空.\n");break;case 6:Printf_Seqstack(s);break;case 7:printf("谢谢使用!\n");break;default :printf("输入错误,请重新输入!\n");break;}}while(choice!=7);return 0;}二.链栈1.宏定义#include<stdio.h>#include<stdlib.h>#define datatype ****2.结构体typedef struct snode{datatype data;struct snode *next;}Stacknode,*Linkstack;3.基本函数Linkstack Init_Linkstack()/*初始化栈函数1.先决条件:无2.函数作用:初始化链栈,返回top地址*/ { Linkstack top;top=(Linkstack)malloc(sizeof(Stacknode));top->next=NULL;return top;}int Empty_Linkstack(Linkstack top) /*判栈空函数1.先决条件:初始化链栈2.函数作用:判断栈是否为空,空返回1,不空返回0*/{if(top->next==NULL)acidity, mL.; M--calibration of the molar concentration of sodium hydroxide standard solution, moI/L; V--amount of the volume of sodium hydroxide standard solution, Ml; M--the weight of the sample, g. Such as poor meets the requirements, take the arithmetic mean of the second determination as a result. Results one decimal. 6, allowing differential analyst simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than 1.0. 1, definitions and principles fordetermination of ash in starches, starch and ash: starch samples of ash the residue obtained after weight. Original sample residue weight of sample weight or weight expressed as a percentage of the dry weight of the sample. Samples of ash at 900 ? high temperature until ashing sample ... The Crucible: determination of Platinum or other conditions of the affected material, capacity of 50mL. Dryer: has effectively adequate drying agent and-perforated metal plate or porcelain. Ashing furnaces: device for controlling and regulating temperature, offers 900 incineration temperature of 25 c. Analytical balance. Electric hot plate or Bunsen. 3, crucible of analysis steps preparation: Crucible mustfirst wash with boiling dilute hydrochloric acid, then wash with a lot of water and then rinse with distilled water. Wash the Crucible within ashing furnace, heated at 900 to 25 ? 30min, and in the desiccator to cool to room temperature and then weighing,return 1;else return 0;}int Push_Linkstack(Linkstack top,datatype x) /*入栈函数1.先决条件:初始化链栈2.函数作用:将数据x入栈,成功返回1,失败返回0*/ { Stacknode *p;p=(Stacknode *)malloc(sizeof(Stacknode));p->data=x;p->next=top->next;top->next=p;return 1;}int Pop_Linkstack(Linkstack top,datatype *x) /*出栈函数1.先决条件:初始化链栈2.函数作用:若栈空退出,若没空则将数据出栈,并将其存放到x中,成功返回1,因栈空失败返回0*/{if(top->next==NULL)return 0;Stacknode *p=top->next;*x=p->data;top->next=p->next;free(p);return 1;}int Top_Linkstack(Linkstack top,datatype *x) /*取栈顶元素函数1.先决条件:初始化链栈2.函数作用:取栈顶元素并放到x中,成功返回1,因栈空失败返回0*/{if(top->next==NULL)return 0;*x=top->next->data;return 1;}int Printf_Linkstack(Linkstack top) /*遍历链栈函数1.先决条件:初始化链栈2.函数作用:遍历链栈,成功返回1*/ {Stacknode *p=top->next;int j=0;while(p){printf("%d ",p->data);/*因datatype不同而不同*/j++;if(j%10==0)acidity, mL.; M--calibration of the molar concentration of sodium hydroxide standard solution, moI/L; V--amount of the volume of sodium hydroxide standard solution, Ml; M--the weight of the sample, g. Such as poor meets the requirements, take the arithmetic mean of the second determination as a result. Results one decimal. 6, allowing differential analyst simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than 1.0. 1, definitions and principles for determination of ash in starches, starch and ash: starch samples of ash the residue obtained after weight. Original sample residue weight of sample weight or weight expressed as a percentage of the dry weight of the sample. Samples of ash at 900 ? high temperature until ashing sample ... The Crucible: determination of Platinum or other conditions of the affected material, capacity of 50mL. Dryer: has effectively adequate drying agent and-perforated metal plate or porcelain. Ashingfurnaces: device for controlling and regulating temperature, offers 900 incineration temperature of 25 c. Analytical balance. Electric hot plate or Bunsen. 3, crucible of analysis steps preparation: Crucible mustfirst wash with boiling dilute hydrochloric acid, then wash with a lot of water and then rinse with distilled water. Wash the Crucible within ashing furnace, heated at 900 to 25 ? 30min, and in the desiccator to cool to room temperature and then weighing,printf("\n");p=p->next;}printf("\n");return 1;}int Conversation_Linkstack(int N,int r)/*数制转换函数(链栈)1.先决条件:具有置空栈,入栈,出栈函数2.函数作用:将N转换为r进制的数*/{Linkstack top;datatype x;printf("%d转为%d进制的数为:",N,r);/*以后可以删除去*/top=Init_Linkstack();do{Push_Linkstack(top,N%r);N=N/r;}while(N);while(Pop_Linkstack(top,&x)){if(x>=10)/*为了能转为十进制以上的*/printf("%c",x+55);elseprintf("%d",x);}printf("\n");free(top);/*释放栈顶空间*/return 1;}4.主函数int main(){Linkstack top;int choice;datatype x;do{printf("************************************************************ ****\n");printf("1.置空栈 2.判栈空 3.入栈 4.出栈 5.取栈顶元素 6.遍历 7.退出\n");printf("************************************************************ ****\n");printf("请输入选择(1~7):");acidity, mL.; M--calibration of the molar concentration of sodium hydroxide standard solution, moI/L; V--amount of the volume of sodium hydroxide standard solution, Ml; M--the weight of the sample, g. Such as poor meets the requirements, take the arithmetic mean of the second determination as a result. Results one decimal. 6, allowing differential analyst simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. This value should be no more than 1.0. 1, definitions and principles for determination of ash in starches, starch and ash: starch samples of ash the residue obtained after weight. Original sample residue weight of sample weight or weight expressed as a percentage of the dry weight of the sample. Samples of ash at 900 ? high temperature until ashing sample ... The Crucible: determination of Platinum or other conditions of the affected material, capacity of 50mL. Dryer: has effectively adequate drying agent and-perforated metal plate or porcelain. Ashing furnaces: device for controlling and regulating temperature, offers 900 incineration temperature of 25 c. Analytical balance. Electric hot plate or Bunsen. 3, crucible of analysis steps preparation: Crucible mustfirst wash with boiling dilute hydrochloric acid, then wash with a lotof water and then rinse with distilled water. Wash the Crucible within ashing furnace, heated at 900 to 25 ? 30min, and in the desiccator to cool to room temperature and then weighing,scanf("%d",&choice);getchar();switch(choice){case 1:top=Init_Linkstack();if(top)printf("置空栈成功!\n");break;case 2:if(Empty_Linkstack(top))printf("此为空栈.\n");elseprintf("此不为空栈.\n");;break;case 3:printf("请输入一个整数:");scanf("%d",&x);if(Push_Linkstack(top,x))printf("入栈成功.\n");elseprintf("栈已满,无法入栈.\n");;break;case 4:if(Pop_Linkstack(top,&x))printf("出栈成功,出栈元素为:%d\n",x);elseprintf("出栈失败,因栈为空.\n");break;case 5:if(Top_Linkstack(top,&x))printf("取栈顶元素成功,栈顶元素为:%d\n",x);elseprintf("取栈顶元素失败,因栈为空.\n");break;case 6:Printf_Linkstack(top);break;case 7:printf("谢谢使用!\n");break;default :printf("输入错误,请重新输入!\n");break;}}while(choice!=7);return 0;}二.队列1.宏定义2.结构体3.基本函数4.主函数acidity, mL.; M--calibration of the molar concentration of sodium hydroxide standard solution, moI/L; V--amount of the volume of sodium hydroxide standard solution, Ml; M--the weight of the sample, g. Such as poor meets the requirements, take the arithmetic mean of the second determination as a result. Results one decimal. 6, allowing differential analyst simultaneously or in quick succession for the second determination, the absolute value of the difference of the results. Thisvalue should be no more than 1.0. 1, definitions and principles for determination of ash in starches, starch and ash: starch samples of ash the residue obtained after weight. Original sample residue weight of sample weight or weight expressed as a percentage of the dry weight of the sample. Samples of ash at 900 ? high temperature until ashing sample ... The Crucible: determination of Platinum or other conditions of the affected material, capacity of 50mL. Dryer: has effectively adequate drying agent and-perforated metal plate or porcelain. Ashing furnaces: device for controlling and regulating temperature, offers 900 incineration temperature of 25 c. Analytical balance. Electric hot plate or Bunsen. 3, crucible of analysis steps preparation: Crucible mustfirst wash with boiling dilute hydrochloric acid, then wash with a lot of water and then rinse with distilled water. Wash the Crucible within ashing furnace, heated at 900 to 25 ? 30min, and in the desiccator to cool to room temperature and then weighing,。
顺序栈的实现代码

顺序栈的实现代码顺序栈是一种基于数组实现的栈结构,它具有后进先出(LIFO)的特点。
在顺序栈中,元素的插入和删除操作只能在栈顶进行,即只能在栈顶进行入栈和出栈操作。
下面我们将介绍顺序栈的实现代码。
我们需要定义一个顺序栈的结构体,包含两个主要的成员变量:一个数组用于存储栈中的元素,一个整数用于记录栈顶的位置。
```#include <stdio.h>#define MAX_SIZE 100typedef struct {int data[MAX_SIZE];int top;} SeqStack;```在顺序栈的初始化函数中,我们将栈顶位置初始化为-1,表示栈为空。
```void init(SeqStack *stack) {stack->top = -1;}```接下来,我们实现入栈操作。
入栈操作是将一个元素插入到栈顶的过程。
首先,我们需要判断栈是否已满,如果栈已满则无法插入元素;如果栈未满,则将栈顶位置加1,并将要插入的元素放入栈顶位置。
```void push(SeqStack *stack, int element) {if (stack->top == MAX_SIZE - 1) {printf("Stack is full, cannot push element.\n");return;}stack->top++;stack->data[stack->top] = element;}```然后,我们实现出栈操作。
出栈操作是将栈顶元素删除的过程。
首先,我们需要判断栈是否为空,如果栈为空则无法删除元素;如果栈不为空,则将栈顶位置减1,并返回栈顶元素的值。
```int pop(SeqStack *stack) {if (stack->top == -1) {printf("Stack is empty, cannot pop element.\n");return -1;}int element = stack->data[stack->top];stack->top--;return element;}```接下来,我们实现获取栈顶元素的操作。
c语言入栈出栈代码

c语言入栈出栈代码C语言是一种广泛使用的编程语言,它具有高效、简洁、灵活等特点,因此在计算机科学领域中得到了广泛的应用。
在C语言中,入栈出栈是一种非常重要的操作,它可以帮助我们实现很多有用的功能。
本文将介绍C语言中的入栈出栈操作,并提供一些示例代码,帮助读者更好地理解这些操作。
一、什么是栈在介绍入栈出栈操作之前,我们需要先了解一下什么是栈。
栈是一种数据结构,它具有后进先出(LIFO)的特点。
也就是说,最后进入栈的元素最先被取出。
栈可以用数组或链表来实现,但是数组实现的栈比较简单,因此我们在本文中只介绍数组实现的栈。
二、栈的基本操作栈的基本操作包括入栈和出栈。
入栈操作将一个元素压入栈中,出栈操作将栈顶元素弹出。
下面是栈的基本操作的代码实现:```c#define MAXSIZE 100 // 栈的最大容量typedef struct {int data[MAXSIZE]; // 栈的数据int top; // 栈顶指针} Stack;// 初始化栈void initStack(Stack *s) {s->top = -1;}// 判断栈是否为空int isEmpty(Stack *s) {return s->top == -1;}// 判断栈是否已满int isFull(Stack *s) {return s->top == MAXSIZE - 1; }// 入栈操作void push(Stack *s, int x) {if (isFull(s)) {printf("Stack is full.\n");return;}s->top++;s->data[s->top] = x;}// 出栈操作int pop(Stack *s) {if (isEmpty(s)) {printf("Stack is empty.\n");return -1;}int x = s->data[s->top];s->top--;return x;}```在上面的代码中,我们定义了一个结构体Stack,它包含一个数组data和一个指针top。
C语言数据结构_第04讲 栈

while(n); printf("转换后的二进制数值为:"); while(s.top) // 余数出栈处理 { printf("%d",s.top->data); // 输出栈顶的余数 stacknode* p=s.top; // 修改栈顶指针 s.top=s.top->next; delete p; // 回收一个结点,C语言中用free p } }
3-3-2 表达式求值
表达式是由运算对象、运算符、括号等组成的有意义的式子。 1.中缀表达式(Infix Notation) 一般我们所用表达式是将运算符号放在两运算对象的中 间,比如:a+b,c/d等等,我们把这样的式子称为中缀表达 式。 2.后缀表达式(Postfix Notation) 后缀表达式规定把运算符放在两个运算对象(操作数) 的后面。在后缀表达式中,不存在运算符的优先级问题,也 不存在任何括号,计算的顺序完全按照运算符出现的先后次 次序进行。 3.中缀表达式转换为后缀表达式 其转换方法采用运算符优先算法。转换过程需要两个栈: 一个运算符号栈和一个后缀表达式输出符号栈。
(4)读栈顶元素
datatype ReadTop(SeqStack *s) { if (SEmpty ( s ) ) return 0; // 若栈空,则返回0 else return (s->data[s->top] );
// 否则,读栈顶元素,但指针未移动
}
(5)判栈空
int SEmpty(SeqStack *s) { if (s->top= = –1) return 1; else return 0; }
2.顺序栈运算的基本算法 (1)置空栈 首先建立栈空间,然后初始化栈顶指针。 SeqStack *Snull() { SeqStack *s; s=new (SeqStack);
c语言main函数的参数入栈顺序

c语言main函数的参数入栈顺序C语言是一种非常受欢迎的编程语言,它的特点是简单易懂,但功能强大。
而其中最为重要的函数是main函数,它是程序的入口函数。
在main函数中,我们可以进行各种操作,调用其他函数完成各种任务。
那么,在C语言中,主函数的参数是如何入栈的呢?下面我们来逐步分析。
首先,对于C语言的主函数,有以下两个常见的形式:1. int main()2. int main(int argc, char* argv[])第一种形式不带参数,而第二种形式带有两个参数:第一个参数是参数个数argc,第二个参数是指向参数的指针数组argv[]。
下面,我们来看看每一种形式的参数入栈顺序。
在第一种形式中,main函数没有任何参数,因此不需要进行参数入栈操作。
在函数调用时,只需要把返回地址入栈即可,返回地址是指在函数调用结束后程序需要继续执行的代码的地址。
在第二种形式中,需要将两个参数入栈,即参数个数argc和指向参数的指针数组argv[]。
这里的指针数组是一个数组,其中每个元素都是指向字符类型的指针,它们指向了传递给程序的命令行信息。
参数的入栈顺序是从右往左的。
也就是说,当调用main函数时,先将argv[]的地址入栈,然后是argc的值。
这是因为数组指针argv[]在参数入栈时会被放在高地址内存中,而argc在参数入栈时会被放在低地址内存中。
因此,为了避免地址溢出和段错误,需要先入栈argv[]的地址,再入栈argc的值。
总结来说,C语言的main函数的参数入栈顺序是从右往左的,先入栈指向参数的指针数组argv[]的地址,再入栈参数个数argc的值,而对于不带参数的形式,只需要将返回地址入栈即可。
在C语言的函数调用中,参数的入栈顺序是非常重要的,它决定了代码的正确性和效率。
因此,在进行函数调用时,需要注意参数的类型和入栈顺序,保证代码的正确性和可读性。
在实际的编程中,需要根据具体的场景和实际需求来确定参数的类型和入栈顺序,从而提高程序的效率和正确性。
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实验
学生学号
学生姓名
系别Biblioteka 数学系专业班级实验报告
目的要求
了解和掌握顺序栈的基本知识及操作要领,明白栈顶栈底等的概念,可以熟练上机调试运行程序
实验内容
学习顺序表的数据类型,数据结构,基本算法及相关应用
程序代码
#include<stdio.h>
#include<stdlib.h>
#include<LIMITS.H>
{
Push(s,a[i]);
}
printf("重新压栈后弹出栈顶元素:\n");
for (i=0;i<10;i++)
{
if(Pop(s,&x))
printf("%d\n", x);
}
Clear(s);
free(s);
return 0;
}
实验存在的问题及处理
1在写主函数时,如果是用void main的形式,那么可以不用有返回值,如果是int main或|status main的话,要有返回值,既末尾要有return语句。
s->e[s->len++]=a;
s->top ++;
return true;
}
else
{
x = ++s->len ;
s->top = s->e + s->len;
while(x>pos)
{
s->e[x] = s->e[x-1];
x--;
}
s->e[pos] = a;
return true;
}
return false;
}
bool Insert(Stack* s, elem_type a, int pos)
{
if(!s) return false;
if(s->len == s->capacity)
return false;
if(pos<0||pos>s->len)
return false;
int x;
if(s->len==0){
{
s->e[i] = s->e[i+1];
i++;
}
s->len--;
s->top--;
return true;
}
elem_type Top(Stack *s)
{
return *(s->top-1);
}
bool Pop(Stack *s, elem_type *x)
{
if(!s || s->e==s->top)
Stack *s = (Stack *)calloc(1, sizeof(Stack));
if(s)
{
s->e=(elem_type*)calloc(maxlen, sizeof(elem_type));
if(s->e) s->capacity = maxlen;
else s->capacity =0;
}
bool Del(Stack *s, int pos, elem_type*x)
{
if(Empty(s)) return false;
if(pos>s->len-1 || pos < 0 ) return false;
*x=s->e[pos];
int i=pos;
while(i<s->len-1)
return (-1);
}
for (int i=0;i<10;i++)
{
Insert(s,a[i],0);
}
int x;
printf("依次删除栈底元素:\n");
for (i=0;i<10;i++)
{
Del(s,0,&x);
printf("%d\n",x);
}
printf("再次压栈:\n");
for (i=0;i<10;i++)
2在做表达式的计算的时候一定要注意何时入栈何时出栈。如果入栈与出栈的情况判断不清楚就无法得出答案。
总结
通过编写程序任意输入栈长度和栈中的元素值,构造一个顺序栈,对其进行清空、销毁、入栈、出栈以及取栈顶元素操作,我学会了如何操作和实现顺序栈,对编程有了更加深入的了解。
s->top = s->e;
}
return s;
}
bool Empty(Stack *s)
{
if(!s)
return true;
else
return s->len==0;
}
bool Full(Stack *s)
{
if(!s) return true;
return s->len == s->capacity;
{
if(s->e) free(s->e);
s->len=0;
s->e = s->top = NULL;
}
int main()
{
int a[10]={0,1,2,3,4,5,6,7,8,9 };
Stack *s=Build(100);
if(s==NULL){
printf("创建栈失败,可能内存空间不够!\n");
typedef int elem_type;
typedef struct {
elem_type *e,*top;
int len;
int capacity;
}Stack;
Stack* Build(int maxlen)
{
if(maxlen<0 || maxlen>INT_MAX) return NULL;
return false;
else
{
*x = *(--s->top);
s->len--;
return true;
}
}
void Push(Stack *s, elem_type x)
{
if(Full(s)) return;
*(s->top++) = x;
s->len++;
}
void Clear(Stack *s)