#include<stdio.h> 
#include<conio.h> 
void main() 
{ 
int n,f; 
f=1; 
printf("Enter the number:\n"); 
scanf("%d",&n); 

while(n>0) 
{ 
printf("%d",n); 
f=f*n; 
n--; 
} 
printf("The factorial of the integer is:%d",f); 
getch(); 
}

I want you to ask a smart question, but apparently neither of us are getting what we want.

#include<stdio.h>
#include<conio.h>
void main()
{
int n,f=1,i,j;
clrscr();
printf("enter the number");
scanf("%d",&n);

if(n>0)
{
j=1;
for(i=0;i<n;i++)
{
f=f*j;
j++;
}
}
printf("the factorial of the number is %d",f);
getch();
}

commented: In the words of Narue -- epic fail -2

Posting bad code badly with no comments is not helpful. Please refrain and stick to asking for help. Or actually, start asking. You need to learn before you can help.