code for calculating factorial

#include"stdio.h"
#include"conio.h"
int i,fact,n;
void main()
{
    printf("Enter a number\n");
    scanf("%d",&n);
    if((n>=1)&&(n<=10))
    {
        fact=1;
        for(i=n;i>=1;i--)
            fact=fact*i;
        printf("Factorial is %d ",fact);
    }
    else
        printf("Invalid Input");
    getch();
}

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