Why is %c used in C?

Question

According to K&R C section 1.6, a char is a type of integer. So why do we need %c. And why can\'t we use %d for everything?

Answer 1

%d is used to print decimal(integer) number ,while %c is used to print character.If you try to print a character with %d format the computer will print the ASCII code of the character.