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Update "Printing Help" documentation

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Help output has changed format over time.  This updates the README
example to reflect current practice by running the example code
and copy-pasting its output.

Signed-off-by: Sean Robinson <sean.robinson@scottsdalecc.edu>
This commit is contained in:
Sean Robinson 2021-10-26 12:58:24 -07:00
parent ea1f7ef663
commit 5cceb98e3c
1 changed files with 6 additions and 5 deletions
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README.md
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@ -257,7 +257,7 @@ As you can see here, ```argparse``` supports negative integers, negative floats
### Combining Positional and Optional Arguments
```cpp
argparse::ArgumentParser program("test");
argparse::ArgumentParser program("main");
program.add_argument("square")
.help("display the square of a given number")
@ -303,14 +303,15 @@ The square of 4 is 16
```
$ ./main --help
Usage: ./main [options] square
Usage: main [options] square
Positional arguments:
square display a square of a given number
square display the square of a given number
Optional arguments:
-h, --help show this help message and exit
-v, --verbose enable verbose logging
-h --help shows help message and exits [default: false]
-v --version prints version information and exits [default: false]
--verbose [default: false]
```
You may also get the help message in string via `program.help().str()`.