Example of Array

Q. Write a C program to read the internal test marks of 25 students in a class and show the number of students who have scored more than 50% in the test.

Ans.

/*We assume that maximum marks in internal test is 500. */
#include<stdio.h>

#include<conio.h>
#define SIZE 5

int main()

{

 int arr[SIZE];

 int i,j,max=0,min=0;

 for(i=1; i<=SIZE; i++)

 {

   printf("Enter %d student marks : ",i);

   scanf("%d",&arr[i]);

 }

 for(i=1; i<=SIZE; i++)

 {

  if(arr[i]/5 > 50)

  {

    max++;

    printf("\nMarks which scored more than 50%% is %d",arr[i]);

  }

  else

  {

    min++;

    printf("\nMarks which scored less than 50%% is %d",arr[i]);

  }

 } 
 printf("\n");

 printf("\nTotal number of students who scored more  than 50%% = %d",max);

 printf("\nTotal number of students who scored less than 50%% = %d",min);
 getch();
 return 0;

}

      Output of the above program :

Enter 1 student marks : 450

Enter 2 student marks : 152

Enter 3 student marks : 266

Enter 4 student marks : 65

Enter 5 student marks : 123

Marks which scored more than 50% is 450
Marks which scored less than 50% is 152
Marks which scored more than 50% is 266
Marks which scored less than 50% is 65
Marks which scored less than 50% is 123

Total number of students who scored more than 50% =  2 

Total number of students who scored less than 50% =  3