How C code for subtract two parameters?

Answer 1

#include

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

int main()
{
double firstNumber(0);
cout << endl << "Enter first number: ";
cin >> firstNumber;

double secondNumber(0);
cout << endl << "Enter second number: ";
cin >> secondNumber;

cout << endl << firstNumber << " - " << secondNumber
<< " = " << (firstNumber - secondNumber) << endl;

system("PAUSE");
return 0;
}