5/6課輔-字串比較

//字串比較
#include <iostream>
#include <string>
using namespace std;

int main()
{
    string s1="this is s1",s2="this is s2";
    char c3[]="this is s1";
    if(s1==s2)
        cout<<"s1==s2\n";
    else
        cout<<"s1!=s2\n";

    if(s1==c3)
        cout<<"s1==c3\n";
    else
        cout<<"s1!=c3\n";

    if(s1.compare(s2)==0)
        cout<<"s1==s2\n";
    else
        cout<<"s1!=s2\n";

    return 0;
}