example code

examples/example1.cpp

@@ -0,0 +1,45 @@
+#include "argparse/argparse.hpp"
+
+int main(int argc, char **argv) {
+
+  // A parser object
+  Parser p;
+
+  // Program data corresponding to flags, options, and positional arguments
+  bool verbose = false;
+  std::string toPrint;
+  std::string maybePrint;
+  int repeats = 1;
+
+  // Inform the parser of the program data.
+  // It will do type-specific conversion
+  p.add_option(repeats, "--repeat");
+  p.add_flag(verbose, "--verbose", "-v");
+  p.add_positional(toPrint)->required();
+  auto psnl = p.add_positional(maybePrint);
+
+  // If there was an error during parsing, report it.
+  if (!p.parse(argc, argv)) {
+    std::cerr << p.help();
+    exit(EXIT_FAILURE);
+  }
+
+  // Execute the program logic
+  if (verbose) {
+    std::cerr << "about to print '" << toPrint << "' " << repeats << " times";
+    if (psnl->found()) {
+      std::cerr << ", then '" << maybePrint << "'";
+    }
+    std::cerr << std::endl;
+  }
+
+  for (int i = 0; i < repeats; ++i) {
+    std::cout << toPrint;
+  }
+  if (psnl->found()) {
+    std::cout << maybePrint;
+  }
+  std::cout << std::endl;
+
+  return 0;
+}