Testing Functions

int main(int argc, char** argv) { cout << cylinderVolume(5, 4); // output should be 314.159 }

• main is called for the side-effects it produces, not for what it returns
• main's return type is int so it can signal an error status
• The formal arguments argc and argv are used for command line arguments and can be ignored for now
• cout is a symbolic name for standard output, i.e. the terminal screen
• << is an operator for piping values to standard output
• Anything beginning with // is a C++ comment and ignored to the end of the line