/**
 * This is a short quiz to see whether or not you understand arrays.
 * 
 * General notes:
 * %d : a placeholder when displaying integer values using printf().
 *
 * \n : displays a new line
 *
 * _array_size(array_name) : returns the size, or number of elements,
 *                           in the array called 'array_name'.
 *
 * my_variable++ : increments the value of a variable by 1 and is the same as
 *                 my_variable = my_variable + 1;
 *
 * my_variable-- : decrements the value of a variable by 1 and is the same as
 *               : my_variable = my_variable - 1;
 */

void main(){
    // declare and initialize our variables
    int index = 0;
    int c = 0;
    int t = 0;
    int grades[] = {24, 65, 82, 99, 10, 19};
    
    // What is the lowest index of an array?
    
    
    // If we let n be the number of elements in an array,
    // what is the highest index of the array?
    
    
    // How many elements are in the array called 'grades'?
    
    
    for(index = 0; index < _array_size(grades); index++){
        if( grades[index] > 65 ){
            c = c + 1;
        }
    }
    // What will print to the screen in the following statement?
    printf("c: %d\n", c);
    
    
    for(index = 0; index < _array_size(grades); index++){
        t = t + grades[index];
    }
    // What will print to the screen in the following statement?
    printf("t: %d\n", t);
    
    
    // Extra Credit!
    t = 0;
    c = 0;
    for(index = 0; index < _array_size(grades); index++){
        if( (grades[index] > 40) && (grades[index] < 90) ){
            t = t + grades[index];
            c = c + 1;
        }
    }
    // What will print to the screen in the following statement?
    printf("t: %d, c: %d\n", t, c);
 
}