Is there any difference between following declarations?
A : extern int fun();
B : int fun();
1.Both are identical
2.No difference, except extern int fun(); is probably in another file
3.int fun(); is overrided with extern int fun();
4.None of these

• extern int fun(); declaration in C is to indicate the existence of a global function and it is defined externally to the current module or in another file.
  
  int fun(); declaration in C is to indicate the existence of a function inside the current module or in the same file. So the answer is option b
• 6 years agoHelpfull: Yes(5) No(0)
• 2nd option is correct
• 5 years agoHelpfull: Yes(1) No(0)