Basic C Programing exercise before stating of CPP

AIM:

Write a C program to develop a menu-driven Student Result Management System. The program should accept marks of students in multiple subjects, calculate total and percentage, determine pass/fail status and grade using decision-making statements, and display the result. Use functions for different operations and appropriate loops for repeated processing. Implement a menu using switch-case and provide an option to terminate the program.

Code: 

 #include <stdio.h>

void result()

{

    int m[5], i, total = 0;

    float per;

    printf("Enter marks of 5 subjects: ");

    for(i = 0; i < 5; i++) {

        scanf("%d", &m[i]);

        total += m[i];

    }

    per = total / 5.0;

    printf("Total = %d\nPercentage = %.2f\n", total, per);

    if(per >= 90)

        printf("Grade: A+\n");

    else if(per >= 75)

        printf("Grade: A\n");

    else if(per >= 60)

        printf("Grade: B\n");

    else if(per >= 40)

        printf("Grade: C\n");

    else

        printf("Result: Fail\n");

}

int main()

{

    int ch;

    do {

        printf("\n1. Enter Result\n2. Exit\nChoice: ");

        scanf("%d", &ch);

        switch(ch) {

            case 1: result(); break;

            case 2: printf("Exit"); break;

            default: printf("Invalid Choice");

        }

    } while(ch != 2);

    return 0;

}

Output :