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

printf and scanf are I/O functions that are designed and defined in a way to receive a control string and a list of arguments.

The functions does not know the type of parameter passed to it , and Compiler also cant pass this information to it.