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https://github.com/KeqingMoe/argparse.git
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1a7a1dfd43
parse_args can throw exceptions that are not based on std::runtime_error, and the error message should show on all errors.
31 lines
754 B
C++
31 lines
754 B
C++
// SPDX-License-Identifier: MIT
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#include <argparse/argparse.hpp>
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int main(int argc, char *argv[]) {
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argparse::ArgumentParser program("main");
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program.add_argument("square")
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.help("display the square of a given number")
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.scan<'i', int>();
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program.add_argument("--verbose").default_value(false).implicit_value(true);
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try {
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program.parse_args(argc, argv);
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} catch (const std::exception &err) {
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std::cerr << err.what() << std::endl;
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std::cerr << program;
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return 1;
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}
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int input = program.get<int>("square");
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if (program["--verbose"] == true) {
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std::cout << "The square of " << input << " is " << (input * input)
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<< std::endl;
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} else {
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std::cout << (input * input) << std::endl;
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}
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}
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