C/C++ : Why do we need to include the .h while everything works when including only the .cpp file?

Posted by reaffer on Programmers See other posts from Programmers or by reaffer
Published on 2014-08-23T16:47:01Z Indexed on 2014/08/23 22:33 UTC
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Hi ,

Why do we need to include both the .h and .cpp files , while we can make it works with making just a .cpp file and then including it .

Case one : Creating a file.h containing declarations . Creating a file.cpp containing definitions . Including both on the main.cpp .

Case two : Creating a file.cpp containing declaration/definitions ( no prototypes ) Including it on the main.cpp .

Both worked for me , but still can't the difference since i do not have a background on the compiling and linking process .

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