printf and scanf functions

 In which of the following header files printf and scanf functions are included?

a) inout.h

b) stdlib.h

c) stdio.h

d) io.h

Provide your answer in a comment.

Can you guess which of these is a keyword of C Programming Language?

 Which of the following is a keyword of C Programming language?

a) printf

b) scanf

c) sizeof

d) getstr

Type the answer in a comment

Datatype int in C

 What is the size of an int (integer) in the C language?

a) 1 byte

b) 2 bytes

c) 4 bytes

d) depending on OS