C语言函数练习题

/*姓名：白银日期：2007.6.11描述：英尺，英寸，米，厘米之间的转换*/#include <stdio.h>float GetInch(float feet);float GetMeter(float inch);float GetCentiMeter(float meter);void main(){float inch;float meter;float centimeter;float feet;printf("请输入英尺的值\n");scanf("%f",&feet);inch=GetInch(feet);printf("转换成英寸的结果是%.2f:",inch);printf("\n");meter=GetMeter(GetInch(feet));printf("转换成米的结果是%.2f:",meter);printf("\n");centimeter=GetCentiMeter(GetMeter(GetInch(feet))); printf("转换成米的结果是%.2f:",centimeter);printf("\n");float GetInch(float feet){float inch;inch=feet*12;return inch;}float GetMeter(float inch){float meter;meter=inch*2.54;return meter;}float GetCentiMeter(float meter) {float centimeter;centimeter=meter*100;return centimeter;}/*姓名：白银日期：2007.6.11描述：底和高求三角形面积*/#include <stdio.h>float GetArea(float h,float l);void main(){float area;float h;float l;printf("请输入底和高\n");scanf("%f,%f",&l,&h);area=GetArea(h,l);printf("三角形面积=%.2f",area); printf("\n");}float GetArea(float h,float l) {float area;area=h*l/2;return area;}/*姓名：白银日期：2007.6.11描述：函数递归求阶乘*/#include <stdio.h>int GetFactorial(int number); void main(){int number;unsigned long int result;printf("请输入number的值\n"); scanf("%d",&number);result=GetFactorial(number);printf("结果是%d\n",result);}int GetFactorial(int number){int result;if(number==1){result=1;}else{result=GetFactorial(number-1)*number; }return result;}/*姓名：白银日期：2007.6.11描述：画出一个正方形*/#include <stdio.h>void Draw(int num);void OutPut1(int num);void OutPut2(int num);void main(){int num;printf("请输入正方型的行数\n"); scanf("%d",&num);Draw(num);printf("\n");}void OutPut1(int num){int i;for(i=0;i<num;i++){printf("*");}for(i=0;i<num;i++){printf("\n");}}void OutPut2(int num){int i;for(i=0;i<num;i++){printf("\n");}for(i=0;i<num;i++){printf("*");}void Draw(int num){int i;int j;OutPut1(num);for(i=0;i<num;i++){for(j=0;j<num;j++){if((i==0&&j==0)||(i==(num-1)&&j==0)||(i==(num-1)&&j==(num-1))||(i==0&&j== (num-1))){printf("*");}else{printf(" ");}}printf("\n");}OutPut2(num);}/*姓名：白银日期：2007.6.11描述：求出3个数字的立方的和#include <stdio.h>#include <math.h>float GetNumber(float a,float b,float c); void main(){float a,b,c;float num;printf("请输入3个数字\n");scanf("%f%f%f",&a,&b,&c);num=GetNumber(a,b,c);printf("结果=%.2f\n",num);}float GetNumber(float a,float b,float c) {float num;num=(float) (pow(a,3)+pow(b,3)+pow(c,3)); return num;}/*作者：白银日期：2007.6.11描述：输入一定的钱数，得出最少需要多少张*/#include <stdio.h>int GetMoney(int *num,int money);void main(){int a[7];int *p;int num;p=&num;printf("请输入钱数\n");scanf("%d",p);a[0]=GetMoney(p,100);a[1]=GetMoney(p,50);a[2]=GetMoney(p,20);a[3]=GetMoney(p,10);a[4]=GetMoney(p,5);a[5]=GetMoney(p,2);a[6]=GetMoney(p,1);printf("需要100元的%d张\n",a[0]); printf("需要50元的%d张\n",a[1]); printf("需要20元的%d张\n",a[2]); printf("需要10元的%d张\n",a[3]); printf("需要5元的%d张\n",a[4]); printf("需要2元的%d张\n",a[5]); printf("需要1元的%d张\n",a[6]);}int GetMoney(int *num,int money){int count;count=*num/money;*num=*num%money;return count;}/*作者：白银日期：2007，6，11描述：输入一个数转换成16，2，12，7，8进制的数字，并且输出。

*/#include <stdio.h>void GetSixteen(int num);//转换成16进制void GetTwo(int num);//转换成2进制void GetEight(int num);//转换成8进制void GetTwelve(int num);//转换成12进制void GetSeven(int num);//转换成7进制void Sort(int *a,int i);//反向输出void main(){int num;printf("请输入一个数字\n");scanf("%d",&num);GetSixteen(num);GetTwo(num);GetEight(num);GetTwelve(num);GetSeven(num);}void Sort(int *a,int i){int j;for(j=i-1;j>=0;j--){printf("%d ",a[j]);}printf("\n");}void GetSixteen(int num){int a[100];int i=0;int j;printf("转换成16进制为:"); while(num!=0){a[i]=num%16;num=num/16;i++;}for(j=i-1;j>=0;j--){printf("%x ",a[j]);}printf("\n");}void GetTwo(int num){int a[100];int i=0;printf("转换成2进制为:"); while(num!=0){a[i]=num%2;num=num/2;i++;}Sort(a,i);}void GetEight(int num){int a[100];int i=0;printf("转换成8进制为:"); while(num!=0){a[i]=num%8;num=num/8;i++;}Sort(a,i);}void GetTwelve(int num){int a[100];int i=0;printf("转换成12进制为:"); while(num!=0){a[i]=num%12;num=num/12;i++;}Sort(a,i);}void GetSeven(int num){int a[100];int i=0;printf("转换成7进制为:");while(num!=0){a[i]=num%7;num=num/7;i++;}Sort(a,i);}/*姓名：白银时间：2007.6.11描述：输入半径，底和高求出圆的面积，周长和三角形面积*/#include <stdio.h>#define PI 3.14float GetRoundArea(float r);float GetRoundPerimeter(float r);float GetTrigonArea(float hight,float length);void main(){float r;float hight;float length;float area;float perimeter;printf("请输入半径，高和底边长度\n");scanf("%f%f%f",&r,&hight,&length);area=GetRoundArea(r);printf("圆的面积是%f\n",area);perimeter=GetRoundPerimeter(r);printf("圆的周长是%f\n",perimeter);area=GetTrigonArea(hight,length);printf("三角形的面积是%f\n",area);}float GetRoundArea(float r){float area;area=PI*r*r;return area;}float GetRoundPerimeter(float r){float perimeter;perimeter=2*PI*r;return perimeter;}float GetTrigonArea(float hight,float length) {float area;area=hight*length/2;return area;}/*姓名：白银日期：2007.6.11描述：输入一个字符串，统计小写字母个数*/#include <stdio.h>#define N 10000int GetNumber(char *a,int n);void main(){char a[N];int i;int num;printf("请输入一个字符数组\n");for(i=0;i<N;i++){scanf("%c",&a[i]);if(a[i]=='\n'){break;}}num=GetNumber(a,i);printf("数组中小写字母的个数是%d\n",num); }int GetNumber(char *a,int n){int i;int count=0;for(i=0;i<n;i++){if(a[i]<='z'&&a[i]>='Z'){count++;}}return count;}/*姓名：白银日期：2007.6.11描述：输出一个由*和A或者a组成的三角形*/#include <stdio.h>char Input();int InputNumber();void Output(char c,int num);void main(){int c;int num;c=Input();num=InputNumber();Output(c,num);}char Input(){char c;char ans='y';printf("请输入a,A,或者*\n");while(ans=='y'){fflush(stdin);scanf("%c",&c);if(c=='a'||c=='A'||c=='*'){break;}else{printf("输入错误，重新输入\n");}}return c;}int InputNumber(){int num;char ans='y';printf("请输入你要的三角型的行数(<26)\n"); while(ans=='y'){scanf("%d",&num);if(num<26){break;}else{printf("输入错误，重新输入\n");}}return num;}void Output(char c,int num){int i;int j;for(j=1;j<=num;j++){for(i=1;i<=num-j;i++){printf(" ");}for(i=1;i<=2*j-1;i++){printf("%c",c);}printf("\n");}}/*作者：白银日期：2007.6.11描述：取得日期。