typdef problem with C source files in VS 2010

[akevan]

Hi all,

I've got a VS 2010 project that makes some pretty standard typedefs like:

typedef int mlInt;

... and a function that looks like:

void mlVecMult(int length, int* vec1, int* vec2, int* vecOut);

In my .c file (vector.c), I have a basic implementation:

void mlVecMult(mlInt length, mlInt* vec1, mlInt* vec2, mlInt* vecOut)
{
	for(mlInt i=0; i < length; i++)
	{
		vecOut[i] = vec1[i] * vec2[i];
	}
}

So when I compile this, the compiler gives a ton of errors like:

ml_vector.c(5): error C2143: syntax error : missing ';' before 'type'

.. so it doesn't find the type properly. BUT if I change the extension of the file vector.c to .cpp, it works fine.

Is this some C syntax thing I'm forgetting? Thanks for any help.

[donbock]

You define variable i within the for statement in function mlVecMult. You couldn't do that in C until C99.

• Move the definition to a line of its own prior to the for statement.
• Investigate whether you need to set some command line switch or VS 2010 option to select C99.

[akevan]

Of course... that's standard C. Thanks!! Taking a while to remember all these little differences between ANSI C and C++.