Why my code is not working?

#1

#include
using namespace std;
int factorial(int n){
if(n==0 || n==1)
return 1;
else
return n*factorial(n-1);
}
int main(){
int n;
cin>>n;
cout<<factorial(n)<<endl;

return 0;

}

#2

Hi @kundankumarsports2,

u cannot calculate factorial of large numbers such as 100! using this as 100! exceeds 10^18.
So in order to calculate such large factorials, u need to use multiplication using arrays.
like first array={0,0,0,0,0,0,1}
then multiply by 2,3 to make array={0,0,0,0,0,0,6}
then multiply by 4 to make array = {0,0,0,0,0,1,2}
and so on calculate large factorial.
Hope dis resolve ur doubt.
If u still hv any doubts, feel free to post them here

#3

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