C program to find factorial of a number using recursion

Factorial is mostly used in calculting permutation and combination. Factorial sign is '!' i.e exclamatory mark.
For eg 4! can be calculated as : 4!=4*3*2*1=24. Here the c program to calculate factorial using recursion function.

#include<stdio.h>
#include<conio.h>

int recfact(int);

main( )
{
int a, fact, rec ;
printf ( "\nEnter any number " ) ;
scanf ( "%d", &a ) ;
rec = recfact ( a ) ;
printf ( "Factorial value = %d", fact ) ;
getch();
}
int recfact( int x )
{
int f ;
if ( x == 1 )
return ( 1 ) ;
else
f = x * recfact ( x - 1 ) ;
return ( f ) ;
}

Output :

c program to find factorial using recursion

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