/*  Create a function that takes two numbers and a 
 *  mathematical operator + - / * and will perform 
 *  a calculation with the given numbers.
 */
int calculator(int num1, char op, int num2) {
	switch (op){
		case '*': return num1 * num2; 
	// condition ? value_if_true : value_if_false <- ternary statement example
		case '/': return (num2==0) ? 0 : num1/num2;
		case '+': return num1 + num2; 
		case '-': return num1 - num2; 	
	}
}