reoving static cast things are same

[technologist]

The static cast was doing what it was supposed to. And reality check I commented the static cast out and the program works the same. Shouldn't the program throw error? I also plan on ridding the code of magic numbers.

#include<iostream>

using namespace std;

int main ()
{
	double number_1; double number_2;
	cout<<"input 2 numbers for math ops"<<endl;
	cout<<"Number 1  :";
	cin>>number_1;
	cout<<"Number 2  :";
	cin>>number_2;
	cout<<endl;
	char x;
	cout<<"input an operator (+,-,*,/) :";
	cin>>x;
	cout<<"------------"<<endl;
	double result(0); int flag(0);int y(0);
	 //y = static_cast<int>(x);    //<<endl;
	if (x == 42){cout<<number_1 * number_2; ++flag;};       //<<f;};
	if (x == 43){cout<<number_1 + number_2; ++flag;};
	if (x == 45){cout<<number_1 - number_2; ++flag;};
	if (x == 47){cout<<number_1 / number_2; ++flag;};

	if (!flag) cout<<"must put in +/*- operator"<<endl;
	return 0;

}

[keskiverto]

Implicit conversion / numeric promotion.
See http://en.cppreference.com/w/cpp/language/implicit_cast