Question

How to set showpos format flag to show the a plus sign (+) for double number in C++

Answer 1

#include <iostream>

using std::cout;
using std::endl;

int main()
{
	double f = 3.14;

	cout.setf(std::ios::showpos);
	cout << f << endl;

	return 0;
}

/*
run:

+3.14

*/

 

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