#include <stdio.h>
 
int factorial(int x);
int main(void){
    
printf("%i",factorial(10));
 
return 0;
}
 
 
int factorial (int x){
 
if(x <= 1){
x = 1;
}
else{
x =  x * factorial(x-1);
}
 
//printf("%i", x);
return x;
}

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