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In one 'c' file I define the following function:
void fnTemp(int jj, int kk);
void fnTemp(int jj, int kk)
{
...do some stuff...
}
In a different 'c' file I have the following:
extern void fnTemp(int jj);
void fnTryIt(void)
fnTemp(3);
This will link without any errors. How do I get the linker to tell me that I have two definitions for fnTemp()?
I know that I could put the declaration for fnTemp() in a .h file and include the .h file in both .c files which will then trigger a compiler error. But I have an instance where that can cause other issues.
Thank you for any help.
I was hoping maybe there was some type of linking option to do this. I tried switching to C++ but due to external libraries and includes this is not possible. The build fails in ways that I can't correct.
Thank you for taking the time to answer.
The linker is most often the same, no matter if C or C++. It is the compiler which makes the difference. Best protectection is to use only header files and switch on all warnings.