Compute area of a rectangle using default arguments. : Function Arguments « Function « C++

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C++ » Function » Function Arguments Screenshots  Compute area of a rectangle using default arguments.   #include <iostream> using namespace std; double rect_area(double length, double width = 0) {   if(!width)       width = length;   return length * width; } int main() {   cout  << "10 x 5.8 rectangle has area: ";   cout << rect_area(10.0, 5.8) << '\n';   cout  << "10 x 10 square has area: ";   cout << rect_area(10.0) << '\n';   return 0; }                          Related examples in the same category 1. A example of default arguments. 2. Use default argument 3. Default function arguments