Changed printf.cpp to printf.c to be usable with 'C'-compilers

closes #1

1 files changed, 14 insertions, 4 deletions

diff --git a/README.md b/README.md
index bd4c73f..7af4a2f 100644
--- a/README.md
+++ b/README.md
@@ -28,18 +28,28 @@ Therefore I decided to write an own implementation which meets the following ite
  - Support of dec/float number representation (with an own fast itoa/ftoa)

  - Reentrant and thread-safe, malloc free

  - LINT and compiler L4 warning free, coverity clean, automotive ready

- - Extensive test suite (> 270 test cases) passing

+ - Extensive test suite (> 280 test cases) passing

+ - Simply the best printf around the net

  - MIT license

 

 

 ## Usage

 

-Add/link `printf.cpp` to your project and include `printf.h`. That's it.  

-Usage is 1:1 like the according stdio.h library version:  

-

+Add/link *printf.c* to your project and include *printf.h*. That's it.  

+Implement your low level output function needed for `printf()`:

+```C

+void _putchar(char character)

+{

+  // send char to console etc.

+}

+```

+

+Usage is 1:1 like the according stdio.h library version:

+```C

 `int printf(const char* format, ...);`  

 `int sprintf(char* buffer, const char* format, ...);`  

 `int snprintf(char* buffer, size_t count, const char* format, ...);`  

+```

 

 **Due to genaral security reasons it is highly recommended to use `snprintf` (with the max buffer size as `count` parameter) only.**  

 `sprintf` has no buffer limitation, so when necessary - use it with care!