// C
#include <stdio.h>
int strnmerge(char*str,int n,char const*s1,char const*s2){
while(n > 0) {
if(!(*s1) && !(*s2)) break
if(*s1 && n > 0) {
*str++ = *s1++
--n
}
if(*s2 && n > 0) {
*str++ = *s2++
--n
}
}
*str = '\0'
}
int main() {
char s1[] = "aaaa"
char s2[] = "bbbbbbbbb"
char str[100]
strnmerge(str, 10, s1, s2)
printf("s1 = %s\n", s1)
printf("s2 = %s\n", s2)
printf("str = %s\n", str)
return 0
}
// C++
#include <iostream>
using namespace std
int strnmerge(char*str,int n,char const*s1,char const*s2){
while(n > 0) {
if(!(*s1) && !(*s2)) break
if(*s1 && n > 0) {
*str++ = *s1++
--n
}
if(*s2 && n > 0) {
*str++ = *s2++
--n
}
}
*str = '\0'
}
int main() {
char s1[] = "aaaa"
char s2[] = "bbbbbbbbb"
char str[100]
strnmerge(str, 10, s1, s2)
cout << "s1 = " << s1 << endl
cout << "s2 = " << s2 << endl
cout << "str = " << str << endl
return 0
}
#include <stdio.h>#include <time.h>
int main()
{
int a,b
srand(time(NULL))
a=rand()
scanf("%d",&b)
a==b?printf("true"):printf("false")
return 0
}
//运行示例:
#include <stdio.h>#define Pi 3.1416
int main()
{float r,h,c,s1,s2,v1,v2
printf("请输入圆半径和圆柱高:")
scanf("%f%f",&r,&h)
c=2*Pi*r
s1=0.5*c*r
s2=4*s1
v1=3*s1*r/4
v2=s1*h
printf("圆周长=%f\n圆面积=%f\n圆球表面积=%f\n",c,s1,s2)
printf("圆球体积=%f\n圆柱体积=%f\n",v1,v2)
return 0
}
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