Lab2/Q2.c

#include <stdio.h>

typedef union Student {
    char name[50];
    int roll_number;
    int grades[3];
} Student;

double student_average_grade(Student student) {
    double average_grade = 0.0;
    for(int i = 0; i < 3; i++) {
        average_grade += student.grades[i];
    }
    return average_grade/3;
}

double all_student_averages(Student arr[], int len) {
    double average_grade = 0.0;
    for(int i = 0; i < len; i++) {
        average_grade += student_average_grade(arr[i]);
    }
    return average_grade/len;
}

Student highest_grade(Student arr[], int len) {
    Student highest = arr[0];
    for(int i = 0; i < len; i++) {
        if(student_average_grade(arr[i]) > student_average_grade(highest)) {
            highest = arr[i];
        }
    }
    return highest;
}

int main() {
    Student John;
    John.grades[0] = 3;
    John.grades[1] = 4;
    John.grades[2] = 3;
    Student Bob;
    Bob.grades[0] = 4;
    Bob.grades[1] = 4;
    Bob.grades[2] = 4;
    Student Bo;
    Bo.grades[0] = 2;
    Bo.grades[1] = 1;
    Bo.grades[2] = 2;

    Student arr[3];
    arr[0] = John;
    arr[1] = Bob;
    arr[2] = Bo;

    printf("Average Grade: %0.02f\n", student_average_grade(arr[0]));
    printf("Average Grade: %0.02f\n", student_average_grade(arr[1]));
    printf("Average Grade: %0.02f\n", student_average_grade(arr[2]));
    printf("Average Grade: %0.02f", all_student_averages(arr, 3));

    //("Student with highest grades: ")

    return 0;
}