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

change

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

to

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