int main() {
    int a = // get input from user;
    int b = // get input from user;
	int c = // get input from user;
    int d = 0;

    if (a > b) or (a > c) {
        d = a;
    } else if (b > a) or (b > c){
        d = b;
	} else if (c > a) or (c > b){
		d = c;
    }

    // print: max number is 'd'

    return 0;
}