sum of factorials in between range

/* sum of factorials in between m and n */

#include<stdio.h>

#include<conio.h>

void main()

{

int i, j, m, n, fact=1, sum=0;

clrscr();

printf("\n Enter the starting and ending point :");

scanf("%d%d", &m, &n);

for(i=m ;i<=n ;i++)

{

fact=1;

for(j=1; j<=i; j++)

{

fact = fact * j ;

}

sum = sum + fact;

}

printf("\n The sum of factorials between %d and %d is: %d", m, n, sum);

getch();

}