第五章 函数 课后答案【khdaw_lxywyl】

第五章函数一、选择题1A 2-BC 3-5DDC 6BCD7-12CACAAB 二、阅读程序，写出运行结果1、yes3not42、43、1225169214、212345、m=5n=36、911三、程序填空1、return y max=f(1)if(max<f(x))max=f(x)2、*(x+n-1)*(x+n-2-i)*xbackmove(s,3)3、int index(char s[],char sub[])index(s1,s2)j++,k++;return(i)4、double f(double)x1=x x2=x &&root(1,7)5、sum=*p,max1=*p,p++*p1=sum/N *p2=max1sun(a,&aver,&max)6、i++(m=m/h)!=0c[i]ch[k]='\0'四、编程题w w w .k h da w .c o m课后答案网1、#include "iostream.h"#include "stdio.h"void match(char s[],char c1,char c2){char *p=s;while(*p!='\0'){if(*p==c1)*p=c2;p++;}}void main(){char s[20],c1,c2;gets(s);cin>>c1>>c2;match(s,c1,c2);cout<<s<<endl;}2、程序一：#include "iostream.h"double area(double r,double *girth,double pi=3.14159){*girth=2*pi*r;return (pi*r*r);}void main(){double r,c;cout<<"请输入半径：";cin>>r;cout<<"面积="<<area(r,&c)<<endl;cout<<"周长="<<c<<endl;}程序二：#include "iostream.h"void fun(double r,double &girth,double &area,double pi=3.14159){girth=2*pi*r;area=pi*r*r;}void main(){double r,c,a;cout<<"请输入半径：";cin>>r;w w w .k h da w .c o m课后答案网fun(r,c,a);cout<<"面积="<<a<<endl;cout<<"周长="<<c<<endl;}3、#include "iostream.h"#define M 2#define N 3void maxij(int x[][N],int &imax,int &jmax){int i,j;for(i=0;i<M;i++)for(j=0;j<N;j++)if(x[i][j]>x[imax][jmax]){imax=i;jmax=j;}}void main(){int i,j,a[M][N],imax=0,jmax=0;for(i=0;i<M;i++)for(j=0;j<N;j++)cin>>a[i][j];maxij(a,imax,jmax);cout<<imax<<','<<jmax<<endl;}4、#include "iostream.h"#include "stdio.h"void mystrcat (char s[],char t[],int n){int i=0,j=0;char *p=s,*q=t;while((*p!='\0')&&(i<n)){i++;p++;}while(*q!='\0'&&j<n){*p=*q;p++;q++;j++;}*p='\0';}void main()w w w .k h da w .c o m课后答案网{char s[100],t[100];int n;gets(s);gets(t);cin>>n;mystrcat(s,t,n);cout<<s<<endl;}5、#include "iostream.h"#include "stdio.h"char *dif(char s1[],char s2[]){int i;char *p='\0';for(i=0;s1[i]!='\0'&&s2[i]!='\0'&&s1[i]==s2[i];i++);p=&s1[i];if(s1[i]=='\0'&&s2[i]=='\0')cout<<"s1=s2"<<endl;else if(s1[i]<s2[i])cout<<"s1<s2"<<endl;elsecout<<"s1>s2"<<endl;return(p);}void main(){char s1[100],s2[100],*p;gets(s1);gets(s2);p=dif(s1,s2);cout<<p<<endl;while(*p!='\0'){cout<<*p;p++;}}6、#include "iostream.h"int hcf(int u,int v){int z;if (v>u){z=u;u=v;v=z;}if(u%v==0)z=v;else z=hcf(v,u%v);return(z);w w w .k h da w .c o m课后答案网}void main(){int u,v,t;cin>>u>>v;t=hcf(u,v);cout<<"HCF="<<t<<endl;}7、#include "iostream.h"int max(int i,int j);int max(int i,int j,int k);double max(double x,double y);double max(double x,double y,double z);void main(){int i,j,k;double x,y,z;cout<<"Enter two integer:";cin>>i>>j;cout<<"max("<<i<<','<<j<<")="<<max(i,j)<<endl;cout<<"Enter three integer:";cin>>i>>j>>k;cout<<"max("<<i<<','<<j<<','<<k<<")="<<max(i,j,k)<<endl;cout<<"Enter two double:";cin>>x>>y;cout<<"max("<<x<<','<<y<<")="<<max(x,y)<<endl;cout<<"Enter three double:";cin>>x>>y>>z;cout<<"max("<<x<<','<<y<<','<<z<<")="<<max(x,y,z)<<endl;}int max(int i,int j){return (i>j?i:j);}int max(int i,int j,int k){int m=i;if(m<j)m=j;w w w .k h da w .c o m课后答案网if(m<k)m=k;return m;}double max(double i,double j){return (i>j?i:j);}double max(double i,double j,double k){double m=i;if(m<j)m=j;if(m<k)m=k;return m;}w w w .k h da w .c o m课后答案网。