Write a c program to find grade of a student using switch statement

Class                            percentage

Distinction                  85 to 100

First class                    60 to 84

Second class                50 to 59

Pass class                    35 to 49

#include<stdio.h>

#include<conio.h>

void main()

{

int m1,m2,m3,total,choice;

float per;

clrscr();

printf("Enter three subjects marks:\n");

scanf("%d%d%d",&m1,&m2,&m3);

total=m1+m2+m3;

per=total/3.0;

choice=(int)per/10;

printf("Total marks=%d\n",total);

printf("Percentage=%f\n",per);

printf("The result of the student=");

switch(choice)

{

case 10:

case 9:

case 8:printf("Distinction");

         break;

case 7:

case 6:printf("First class");

         break;

case 5:printf("Second class");

         break;

case 4:printf("Pass class");

         break;

case 3:

case 2:

case 1:printf("Fail");

}

getch();

}

Output:

 

run 1:

Enter three subjects marks:

33

30

32

Total marks=95

Percentage=31.666666

The result of the student=Fail

 

run 2:

Enter three subjects marks:

40

45

49

Total marks=134

Percentage=44.666668

The result of the student=Pass class

 

run 3:

Enter three subjects marks:

55

51

50

Total marks=156

Percentage=52.000000

The result of the student=Second class

 

run 4:

Enter three subjects marks:

66

65

70

Total marks=201

Percentage=67.000000

The result of the student=First class

 

run 5:

Enter three subjects marks:

89

88

80

Total marks=257

Percentage=85.666664

The result of the student=Distinction