Please explain Why the answer is 4 here?

Question

printf("%d", sizeof(printf("GeeksQuiz")));

Answer 1

the printf(GeeksQuiz") return the count of chars in the string as an int, and the size of an int is 4.

Answer 2

This is memory allocation, not element size!

int main() {

printf("%lu", sizeof(char));
printf("%lu", sizeof(int));
printf("%lu", sizeof(float)) ;
printf("%lu", sizeof(char));

}

Will output:

1448

%lu is unsigned decimal (long)

Answer 3

NO!
The answer would be COMPILE TIME-ERROR.
Because An expression doesn’t get evaluated inside the size of operator, GeeksQuiz will not be printed. printf returns the number of characters to be printed i.e. 9 which is an integer value. sizeof operator returns sizeof(int).