C++ Primer（第五版）练习3.40

/*************************************************************************
> File Name: 3_40.cpp
> Author:
> Mail:
> Created Time: Wed 12 Apr 2017 09:53:17 PM CST
************************************************************************/

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
char s1[] = "hello";
char s2[] = "world";
char s3[20];
strcat(s1,s2);
strcpy(s3,s1);
cout<<s3<<endl;
return 0;
}