Tag: subject

C Program To Find Grace Marks of Student Using Switch Case

Write a C program to find the grace marks for a student using switch. The user should enter the class obtained by the student and the number of subjects he has failed in. Use the following logic:

– If the student gets first class and the number of subjects he failed in is greater than 3, then he does not get any grace. Otherwise the grace is of 5 marks per subject.

– If the student gets second class and the number of subjects he failed in is greater than 2, then he does not get any grace. Otherwise the grace is of 4 marks per subject.

– If the student gets third class and the number of subjects he failed in is greater than 1, then he does not get any grace. Otherwise the grace is of 5 marks per subject.

Related Read:
if else statement in C
Switch Case Default In C Programming Language

Video Tutorial: C Program To Find Grace Marks of Student Using Switch Case


[youtube https://www.youtube.com/watch?v=wpfh-tLWbEo]

YouTube Link: https://www.youtube.com/watch?v=wpfh-tLWbEo [Watch the Video In Full Screen.]

Source Code: C Program To Find Grace Marks of Student Using Switch Case

#include<stdio.h>

int main()
{
    int grade, grace = 0, failed;

    printf("Enter the class obtained by the student\n");
    scanf("%d", &grade);

    printf("How many subjects has the student failed\n");
    scanf("%d", &failed);

    switch(grade)
    {
        case 1:
                if(failed > 3)
                    grace = 0;
                else
                    grace = 5;

                break;

        case 2:
                if(failed > 2)
                    grace = 0;
                else
                    grace = 4;

                break;

        case 3:
                if(failed > 1)
                    grace = 0;
                else
                    grace = 5;

                break;

         default: printf("You entered wrong class for the student\n");

    }

    if(grade == 1 || grade == 2 || grade == 3)
    {
        printf("The student has obtained a grace marks of %d per subject\n", 
              grace);
    }

    return 0;
}

Output 1
Enter the class obtained by the student
1
How many subjects has the student failed
2
The student has obtained a grace marks of 5 per subject

Output 2
Enter the class obtained by the student
2
How many subjects has the student failed
3
The student has obtained a grace marks of 0 per subject

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Nested if else Statement In C

In this program we’ll show you nesting of if else statements. Here we are illustrating the concept by taking score/marks of 5 subject from the user. Then we calculate the percentage of it and display grade to the user.

Simple Logic

When the condition in if statement is false then only else block gets executed. In our program, we check, if percentage is greater than or equal to 60. If it is false, then only control shifts to else block. So inside else(nested if else) we need not once again check if the percentage is less than 60.

Note: We are not using else if and logical operator in this C program purposefully. We want to show nesting of if else in this program.

 
#include < stdio.h >

int main()
{
    float s1, s2, s3, s4, s5, per;

    printf("Enter marks of 5 subject\n");
    scanf("%f %f %f %f %f", &s1, &s2, &s3, &s4, &s5);

    per = (s1 + s2 + s3 + s4 + s5) / 5.0;

    if(per >= 60)
    {
        printf("Grade A\n");
    }
    else
    {
        if(per >= 50)
        {
            printf("Grade B\n");
        }
        else
        {
            if(per >= 40)
            {
                printf("Grade C\n");
            }
            else
            {
                printf("Failed!\n");
            }
        }
    }

    return 0;
}

Output 1:
Enter marks of 5 subject
59
60
62
61
63
Grade A

Output 2:
Enter marks of 5 subject
59
55
56
53
58
Grade B

Output 3:
Enter marks of 5 subject
49
45
46
49
48
Grade C

Output 4:
Enter marks of 5 subject
39
45
25
36
35
Failed!

Student Grade Calculation using Nested if else: C Program


[youtube https://www.youtube.com/watch?v=I-EHRu-Nq8o]

YouTube Link: https://www.youtube.com/watch?v=I-EHRu-Nq8o [Watch the Video In Full Screen.]


Note: In next video we’ll show you how to perform the same operation as shown in above C program, using else-if and logical operators.

Also check the program C Program To Check Leap Year for a perfect nested if else example.

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert