Why am I getting a 'called object 0 is not a function error'?

Question

I\'m a C# developer trying to learn C (followed by C++). I am going native, working on Ubuntu using vim as my text editor, and the Gnu C Compiler (gcc) to compile.

I\'m

Answer 1

As people have pointed out

int celcius = (5/9)(i-32);

Should be

int celcius = (5/9)*(i-32);

However the reason you are getting that particular error message is that

int celcius = (5/9)(i-32);

is being evaluated at run time as

int celcius = (0)(i-32);

And the runtime system sees (0) as a pointer.

So you need to change your math to avoid the integer division