String user and password c++

#include <iostream>
#include <string.h>
#include <stdio.h>
#include <conio.h>
using namespace std;
int main(){
    char username[26];
    char password[26];
    cout<<"user name:"; gets(username);
    fflush(stdin);
    cout<<"user password:"; gets(password);
    if(strcmp(username,"ros dul")==0){
        if(strcmp(password,"dul123")==0)
            cout<<"correct";


    }
    else
    {
        cout<<"wrong user name";
    }
    {
        cout<<"wrong user password";
    }

    return 0;
}

Note:
 gets=cin: (but it can space)
fflush(stdin): is for seperate date.
strcmp: Is a function starts comparing the first character of each string.