Program to find Grade in C Language

#include<stdio.h>
#include<conio.h>
void main()
{
float per;
clrscr();
printf("enter your percentage");
scanf("%f",&per);
if(per>=60)
printf("\n1st division");
else if(per>=45)
printf("\n2nd division");
else if(per>=33)
printf("fail");
getch();
}