Determination of average using array

#include<stdio.h>

#include<conio.h>

void main()

{   clrscr();

    int grade[10],i,sum=0;

    float average;

    for(i=0;i<5;i++)

    {printf("Enter grade[%d]:",i+1);

    scanf("%d",&grade[i]);

    sum+=grade[i];}

    average=(float)(sum)/5.0;

    printf("\n\n\n\n average is=%f",average);

    getch();

                     }