调试小程序

#include <string>#include <iostream>using namespace std;void main(){    char x[8]={0};    char y[8]={0};    strncpy(x,"hello",sizeof(x));    strncpy(y,"hello world",sizeof(y));    cout<<strlen(x)<<" "<<strlen(y)<<endl;cout<<x<<" "<<y;}

输出：

5 13

hello hello wohello