AVERAGE MARK AND GRADE OF STUDENTS

AIM

To write a C program to calculate the average mark and grade of students using switch.

ALGORITHM

Step 1: Start

Step 2: Read n, m1, m2, m3, m4, m5, iß0

Step 3: if (i<n), if not go to step 19

Step 4: avgß(m1+m2+m3+m4+m5)/5

Step 5: iß(i+1), avg1ß(avg*100)

Step 6: if (avg1>90), if not go to step 8

Step 7: Print Grade A, avg, go to step 18

Step 8: if (avg1>80), if not go to step 10

Step 9: Print Grade B, avg, go to step 18

Step 10: if (avg1>70), if not go to step 12

Step 11: Print Grade C, avg, go to step 18

Step 12: if (avg1>60), if not go to step 14

Step 13: Print Grade D, avg, go to step 18

Step 14: if (avg1>50), if not go to step 16

Step 15: Print Grade E, avg, go to step 18

Step 16: if (avg1<=50)

Step 17: Print Grade F, avg

Step 18: Go to step 3

Step 19: Stop

PROGRAM

#include<stdio.h>

#include<conio.h>

void main()

{

    float m1,m2,m3,m4,m5,avg;

    int grade;

    printf("Enter mark of 5 subjects\n");

    scanf("%f%f%f%f%f",&m1,&m2,&m3,&m4,&m5);

    avg=(m1+m2+m3+m4+m5)/3;

    printf("Average = %f\n",avg);

    if(avg>=85)

        grade=1;

    else if(avg>=70)

        grade=2;

    else if(avg>=60)

        grade=3;

    else if(avg>=50)

        grade=4;

    else if(avg>=40)

        grade=5;

    else

        grade=6;

    switch(grade)

    {

    case 1:

        printf("grade is A");

        break;

    case 2:

        printf("grade is B");

        break;

    case 3:

        printf("grade is C");

        break;

    case 4:

 printf("grade is D");

    case 5:

        printf("grade is E");

        break;

    case 6:

        printf("FAIL");

        break;

    }

    getch();

}