#include "stdafx.h"

 using namespace std ;

//# include<stdio.h>
int main()
{
        
        string name;
        string dessert;
        getline(cin,name);
        strcat(name," ,");
        getline(cin,dessert);
        cout<<name+dessert;
}

在strcat出错，大概是不能直接接字符串

然
int main()
{
        
        string name;
        string dessert;
        getline(cin,name);
        //strcat(name," ,");
        getline(cin,dessert);
        cout<<name+","+dessert;
}

const int SIZE = 20;
 int main()
 {
     using namespace std;
     char firstName[SIZE];
     char lastName[SIZE];
     char fullName[2*SIZE + 1];

     cout << "Enter your first name: ";
     cin >> firstName;
     getchar();
     cout << "Enter your last name: ";
     cin >> lastName;   
     strncpy(fullName,lastName,SIZE);
     strcat(fullName, ", ");
     strncat(fullName, firstName, SIZE);
     fullName[SIZE - 1] = '\0';
     cout << "Here's the information in a single string: "
         << fullName << endl;
     return 0;
 }

这两种做法都对
可否说明下为什么string定义的字符串数组 不能用strcat 进行连接字符串呢？又或是用getline()的原因？

strcat是c语言的，string是c++的，要想使用，可如下操作
char a[12]={0};
string b="234";
strcat（a,b.c_str()）

[ 本帖最后由 战龙 于 2010-3-15 10:22 编辑 ]