Question

I want to use a unsigned int32, using gcc 4.3.3 on Ubuntu 9.04.

However, when I declare this:

unsigned int32 dev_number;

I get an compile error:

error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘dev_number’

Any suggestions?

Answer 1

I’m sure exactly what you’re trying to achieve. Are you trying to have an unsigned int called int32? Or are you trying to have an unsigned 32 bit integer variable?

In the latter case, you can try to use stdint.h, which defines a set of types guaranteed (I believe?) to contain at least the set of bits specified.

#include <stdint.h>

uint32_t my_var;

In the former case, I can’t see why your line shouldn’t work.

unsigned int32 = 42;

printf ("int32 = %u\n", int32);

prints int32 = 42 as expected.

HTH