Different working of cout and printf while both do the same work

Question

we use format specifiers like %d, %c etc in printf but we don't use them in cout. why??

Answer 1

"printf" returns an integer value (equal to the number of characters printed) while "cout" does not return anything

And.

cout << "y = " << 7; is not atomic.

printf("%s = %d", "y", 7); is atomic.

cout performs typechecking, printf doesn't.

There's no iostream equivalent of "% d"

Answer 2

u r welcomed @Manual

Answer 3

Thanks @PR

I did not know printf() could do that.

I will give it a shot later!