Answer:
The code is given below in C with appropriate comments at the sample example
Explanation:
#include <stdio.h>
int main(void) {
const int NUM_VALS = 4;
int courseGrades[NUM_VALS];
int i = 0;
// taking examples of course grades
courseGrades[0] = 7;
courseGrades[1] = 9;
courseGrades[2] = 11;
courseGrades[3] = 10;
for(int i = 0; i < NUM_VALS; i++)
printf("%i ", courseGrades[i]);
printf("\n");
for(int i = NUM_VALS-1; i >= 0; i--)
printf("%i ", courseGrades[i]);
printf("\n");
return 0;
}