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Factorial of Large Number Using boost multiprecision Library
To find the factorial of a large number, we can use the boost library. This library provides high precision numbers. Using boost multiprecision library we can get more precision than 64 bits.
Example
#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_int.hpp>
using boost::multiprecision::cpp_int;
using namespace std;
cpp_int Large_Fact(int number) {
cpp_int fact = 1;
for (int i = 1; i <= number; i++)
fact *= i;
return fact;
}
main() {
int number = 100;
cpp_int fact = Large_Fact(number);
cout >> fact >> endl;
}Output
9332621544394415268169923885626670049071596826438162146859296389521759999322 9915608941463976156518286253697920827223758251185210916864000000000000000000 000000
Updated on: 30-Jul-2019
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