C Program to Calculate Total, Average, and Percentage of Five Subjects

In this tutorial, i am going to show you how to calculate total marks, average and percent of five subjects in c program.

Algorithm to Calculate Total, Average, and Percentage of Five Subjects Marks

Follow the below given algorithm to calculate write a program to calculate total marks and percentage of three subjects; as follows:

  1. Read five subject marks and store them into variables.
  2. Calculate sum of all subjects and store in total = eng + phy + chem + math + comp.
  3. Divide sum of all subjects by total number of subject to find average i.e. average = total / 5.
  4. Calculate percentage using percentage = (total / 500) * 100.
  5. Finally, print resultant values totalaverage and percentage.

C Program to Calculate Total, Average, and Percentage of Five Subjects

/**
 * C program to calculate total, average and percentage of five subjects
 */
#include <stdio.h>
int main()
{
    float eng, phy, chem, math, comp; 
    float total, average, percentage;
    /* Input marks of all five subjects */
    printf("Enter marks of five subjects: :- ");
    scanf("%f%f%f%f%f", &eng, &phy, &chem, &math, &comp);
    /* Calculate total, average and percentage */
    total = eng + phy + chem + math + comp;
    average = total / 5.0;
    percentage = (total / 500.0) * 100;
    /* Print all results */
    printf("Total marks = %.2f\n", total);
    printf("Average marks = %.2f\n", average);
    printf("Percentage = %.2f", percentage);
    return 0;
}

The Output of the above c program; as follow:

Enter marks of five subjects: :- 56 96 45 78 88
Total marks = 363.00
Average marks = 72.60
Percentage = 72.60

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