C Program to Calculate Percentage of Marks of Student

C Program to Calculate Percentage of Marks of Student

Write a C Program to Calculate Percentage of Marks of Student, To calculate average and percentage marks of a student in C programming, you have to ask to the user to enter marks obtained in some number of subjects (5 subjects here, i.e., Physics, Chemistry, Maths, CS, and English).

Percentage can be calculated as the sum of marks obtained divided by the total marks and whole multiplied to 100.
Percent means per cent (hundreds), i.e., a ratio of the parts out of 100. The symbol of percent is %. We generally count percentage of marks obtained, return on investment etc. Percentage can go beyond 100% also.

Algorithm to calculate Average and Percentage

• First Received marks of each subject.
• Calculate sum of all subjects marks.
• Divide total marks by number of subject (percentage=total marks / number of subject).
• Finally print percentage on screen.

#include<stdio.h>
#include<conio.h>

void main()
{
	void main()
{
	int mark[5], i;
	float sum=0, perc, avg;
    clrscr();	
    printf("Enter marks obtained in Physics, Chemistry, Maths, CS, English :");
	for(i=0; i<5; i++)
	{
	 scanf("%d",&mark[i]);
	 sum=sum+mark[i];
	}
	avg=sum/5;
	perc=(sum/500)*100;
	printf("Average Marks: %f",avg);
	printf("\nPercentage: %f%",perc);
	getch();
}

Enter Marks Obtained in Physics, Chemistry, Maths, CS, English:
90
50
70
60
80
Average Marks: 70
Percentage: 70