if statement error

[tharindu11]

i wrote this program to display even number from 100-200. But visual c gives me this error with undeling the "a" in if statement.

Error 1 error C2106: '=' : left operand must be l-value

#include<iostream>
#include<conio.h>

using namespace std;

void main(){

	for(int a=100;a<200;a++){
		if(a%2=0)
			cout<<a<<endl;
	}
	_getch();
}

[condor]

Line 9 must be:
if(a % 2 == 0)

and main() must return an integer:
int main()