I have found one of the most awesome things on the internet. Everybody should try this!

Most of the times we hit a dead end in our codes just because our lousy computers print the floats upto 5 d/6 digits. We are unable to solve a problem. But I just found the solution to that. I have found the perfect function required to increase the number of digits.

First try the code without setprecision.

Then with it.

Run the codes and see the contrast yourself. If you are too lazy to do that look at my code for printing the digits of pi.

The magic happens by the function std::setprecision(n) or setprecision(n), where n is an integer denoting the precision. Replace n=50 to print 50 digits of floating numbers.

The above function is under iomanip.
#include <iomanip> or #include<iomanip.h>

#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
cout<<setprecision(50)<<22.0/7;

return 0;
}