C++ examples for Function:main function
Checking the number of arguments entered at the command line.
#include <iostream> int main(int argc, char* argv[]) { switch (argc - 1) {/*from ww w .jav a2 s .com*/ case 2: case 3: case 4: for (int i {1}; i < argc; ++i) std::cout << "Argument " << i << " is " << argv[i] << std::endl; break; default: std::cout << "You entered the incorrect number of arguments.\n" << "Please enter 2, 3 or 4 arguments. " << std::endl; } }