RE: [Dev-C++] I am new to C ++ and need some help

[Nick <en...@ho...>]

Hello, 
 
> In fact the following stuff can be used in C++ only.
> 
>  char s1[20], s2[20];
> ...
> 
> if(s1==s2)
> ...
> 
> The overloaded string operator == accepts 2 strings (objects) and the
> C-style strings are "upgraded" to temporary strings so as the
> comparison to work.

You can use == as long as one of the arguments is a (C++) string 
object. In your example above, it does not use the string operator.

#include <iostream>
#include <cstring>
#include <string>
using namespace std;

int main(){
    char temp1[20], temp2[20];
    string temp3;
    strcpy(temp1,"John");
    strcpy(temp2,"John");
    temp3 = "John";
    if (temp1 == temp2) cout << "temp1 == temp2" << endl;
    else cout << "temp1 != temp2" << endl;
    if (temp3 == temp1) cout << "temp3 == temp1" << endl;
    else cout << "temp3 != temp1" << endl;
    if (temp2 == temp3) cout << "temp2 == temp3" << endl;
    else cout << "temp2 != temp3" << endl;

    system("pause");
    return(0);
}
 
> But the better is string s1, s2; to be used instead (including the
> <string>).

Agreed.

--
regards,

Nick