Why do I have to specify data type each time in C?

Question

As you can see from the code snippet below, I have declared one char variable and one int variable. When the code gets compiled, it must identify t

Answer 1

scanf as prototype int scanf ( const char * format, ... ); says stores given data according to the parameter format into the locations pointed by the additional arguments.

It is not related with compiler, it is all about syntax defined for scanf.Parameter format is required to let scanf know about the size to reserve for data to be entered.