WAP to enter marks of 30 students, save it in an array and find the average of the marks.

WAP to enter marks of 30 students, save it in an array and find the average of the marks.

#include<stdio.h>
#include<conio.h>
void main()
{
 int j,a[40];
 int i,s=0;
 float d;
 clrscr();
 printf("Enter the Numbers ");
 for(i=0;i<30;i++)
 scanf("%d",&a[i]);
 for(i=0;i<30;i++)
 {
  s=s+a[i];
 }
 d=(s/30);
 printf("The average of Student is = %f",d);
 getch();
}