Question

How to use const_cast on const double reference in C++

Answer 1

#include <iostream>

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

void function(const double &d) {
	double &cc_d = const_cast<double &> (d);

	cc_d = 3.14;
}

int main()
{
	double d = 123.873;

	cout << d << endl;

	function(d);

	cout << d << endl;

	return 0;
}



/*
run:

123.873
3.14

*/

 

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