45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
// This illustrates how to change the flag and name start strings.
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// Note that these defines need to happen *before* tclap is included!
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#define TCLAP_NAMESTARTSTRING "~~"
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#define TCLAP_FLAGSTARTSTRING "/"
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using namespace TCLAP;
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using namespace std;
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int main(int argc, char **argv) {
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// Wrap everything in a try block. Do this every time,
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// because exceptions will be thrown for problems.
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try {
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// Define the command line object.
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CmdLine cmd("Command description message", ' ', "0.9");
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// Define a value argument and add it to the command line.
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ValueArg<string> nameArg("n", "name", "Name to print", true, "homer", "string");
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cmd.add(nameArg);
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// Define a switch and add it to the command line.
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SwitchArg reverseSwitch("r", "reverse", "Print name backwards", false);
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cmd.add(reverseSwitch);
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// Parse the args.
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cmd.parse(argc, argv);
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// Get the value parsed by each arg.
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string name = nameArg.getValue();
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bool reverseName = reverseSwitch.getValue();
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// Do what you intend too...
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if (reverseName) {
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reverse(name.begin(), name.end());
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cout << "My name (spelled backwards) is: " << name << endl;
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}
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else
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cout << "My name is: " << name << endl;
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} catch (ArgException &e) // catch any exceptions
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{ cerr << "error: " << e.error() << " for arg " << e.argId() << endl; }
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}
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