Определить сумму оценок каждого ученика - C (СИ)

#include <stdio.h>
 
typedef struct  {
    unsigned char Mathematics;
    unsigned char Literature;
    unsigned char Physics;
    unsigned char Chemistry;
}Students;
 
int main() {
    Students Student[2] = { { 5,2,5,5 },{ 2,5,2,2 } };
 
    int sum, i;
    for (i = 0; i < 2; i++) {
        sum = Student[i].Mathematics + Student[i].Chemistry + Student[i].Physics + Student[i].Chemistry;
        printf("Student %d has sum %d\n", i+1, sum);
    }
 
    return 0;
}