Use default argument : Function Arguments « Function « C++

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C++ » Function » Function Arguments Screenshots  Use default argument #include <iostream> using namespace std; class myclass {   int x; public:   myclass(int n = 0) {       x = n;    }   int getx() {       return x;    } }; int main() {   myclass o1(10);          // declare with initial value   myclass o2;              // declare without initializer   cout << "o1: " << o1.getx() << '\n';   cout << "o2: " << o2.getx() << '\n';   return 0; }                     Related examples in the same category 1.  A example of default arguments. 2.  Compute area of a rectangle using default arguments.

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