mirror of
https://github.com/KeqingMoe/argparse.git
synced 2025-07-03 22:54:39 +00:00
9377e0d3b2
Only those places in the README where an error is explicitly found in the main function have been updated. Other uses of exit are left untouched as there is not enough context to know if return will work in that location. Signed-off-by: Sean Robinson <sean.robinson@scottsdalecc.edu>
31 lines
758 B
C++
31 lines
758 B
C++
// SPDX-License-Identifier: MIT
|
|
|
|
#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;
|
|
return 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;
|
|
}
|
|
}
|