C Programming Code Examples C > Beginners Lab Assignments Code Examples calculate total average and percentage of five subjects calculate total average and percentage of five subjects Write a C program to input marks of five subjects of a student and calculate total, average and percentage of all subjects. How to calculate total, average and percentage in C programming. Logic to find total, average and percentage in C program. Input marks of five subjects. Store it in some variables say eng, phy, chem, math and comp. Calculate sum of all subjects and store in total = eng + phy + chem + math + comp. Divide sum of all subjects by total number of subject to find average i.e. average = total / 5. Calculate percentage using percentage = (average / 500) * 100. Finally, print resultant values total, average and percentage. #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: \n"); 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; }