Solution to C prog

Hi,

Pls any body help, why the following prog crashing while running.

#include<stdio.h>
#include<conio.h>
int main(){
    int n,*fact(int *n);
    printf("Enter the number:");
    scanf("%d",&n);
    printf("The factorial is %d\n",*fact(&n));
    getch();
}
int *fact(int *p){
    int *res;
        if(*p == 1)
            return(&1);
        else{
            *res = (*p)-- * *fact(p);
        }
    return(&res);
}

Thanks Venkii.