how to print 5 precision float in c 2b 2b

1#include <iostream>
2#include <cstdio>
3using namespace std;
4
5int main() 
6{
7    // This code helps you to print a number with desired decimal
8    double Number=10.3454;
9    printf("%.3lf",Number);
10
11    return 0;
12}