29 lines
729 B
C++
29 lines
729 B
C++
#include <argparse/argparse.hpp>
|
|
|
|
int main(int argc, char *argv[]) {
|
|
argparse::ArgumentParser program("main");
|
|
|
|
program.add_argument("square")
|
|
.help("display the square of a given number")
|
|
.scan<'i', int>();
|
|
|
|
program.add_argument("--verbose").default_value(false).implicit_value(true);
|
|
|
|
try {
|
|
program.parse_args(argc, argv);
|
|
} catch (const std::runtime_error &err) {
|
|
std::cerr << err.what() << std::endl;
|
|
std::cerr << program;
|
|
std::exit(1);
|
|
}
|
|
|
|
int input = program.get<int>("square");
|
|
|
|
if (program["--verbose"] == true) {
|
|
std::cout << "The square of " << input << " is " << (input * input)
|
|
<< std::endl;
|
|
} else {
|
|
std::cout << (input * input) << std::endl;
|
|
}
|
|
}
|