/** Excercise:
 *  1. Trace through user-defined function
 *  2. Create your own function that does a particular task
 */
void main(){
    
    // declare variables
    int my_int;

    // store a new value in memory
    my_int = square(3);
    
    // let's see what is stored
    printf("my_int: %d\n", my_int);
    
    // now, create (implement) a function that 
    // adds one to a number and then triples it.
    // it must return an 'int' type
    // *** uncomment the line below and try to compile ***
    //my_int = add_one_then_triple(3);
    
    printf("my_int: %d\n", my_int);  // <- this should print 12!
}

int square(int n){
    return n * n;
}

int double(int n){
    return 2 * n;
}

// create your new functions below