Something went wrong about strcmp() C++

#include <iostream>
#include <cmath>
#include <iomanip>
#include <conio.h>   //getche() icin
#include <cstring>   //stringler
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
/////////////////////////////////////////////////////

/////////////////////////////////////////////////////
int main(int argc, char** argv) {
	
	char username[20],password[20];
	char id[]="Username";
	char pw[]="Password";
	
	cout<<"\n\n  Welcome :)\n";
	
	for(int a=2;a>=0;a--){
		cout<<"\n\nYour Username: ";
		gets(username);
		cout<<"Your Password: ";
		gets(password);
		
		if(strcmp(id,username)==0 && (pw,password)==0){
			cout<<"Success!";
			cout<<"\n\Connecting...";
			break;
		}
		else{
			cout<<"\nWrong entry";
		}
		if(a!=0)
		cout<<endl<<a<<" tries left";
		else
		cout<<endl<<"Your account is blocked for 1 day";
	}
}