%zu marker for sizeof() function doesn't return value

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C

The %zu marker should return value when You use sizeof() function. In a console application there is a message "The chapters array uses zu bytes of memory." It should return number of bytes used by these two stings, not this "zu".

#include <stdafx.h>
#include <stdio.h>
#include <stdlib.h>
#define CHAPTER0 "Introduction"
#define CHAPTER1 "Getting started with C"
#define CHAPTER2 "Introduction to Data Types"
#define CHAPTER3 "Working with Numbers"
#define CHAPTER4 "Control Structures"

int main (void) {
    char chapters[5][27] = {CHAPTER0, CHAPTER1, CHAPTER2, CHAPTER3, CHAPTER4};
    char *chapters_ptr[5] = {CHAPTER0, CHAPTER1, CHAPTER2, CHAPTER3, CHAPTER4};
    printf ("The chapters array uses %zu bytes of memory.\n", sizeof(chapters));
    printf ("The chapters_ptr array uses %zu bytes of memory.\n", sizeof(chapters_ptr));
    getchar();
    return 0;
}