Sample Program For Adding Elements into the Array

#include
void main()
{
int i , marks [20] ;
float sum = 0 ,avg;
clrscr();
for(i = 0 ; i<20 ;i++)
{
printf("Enter marks :");
scanf("%d",&marks[i]);
}
for(i = 0; i <20 ; i++)
{
sum = sum + marks[i];
}
avg = sum / 20;
printf("\nThe sum is %f",sum);
printf("\nThe average is %f",avg);
getch();
}