1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | #include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
// PADDING … and why we sometimes use #pragma pack(1)
typedef struct _Node {
struct _Node* next; // 8 bytes for an address on our platform
int value; // 4 bytes for an int on our platform
} Node; // expect: 12 bytes for the Node object
int main(int argc, char* argv[]) {
// assert(sizeof(Node) == 12); // FAILED
// do not use sizeof(TYPE) in your code; this is for illustration
printf("sizeof(Node) == %zd\n", sizeof(Node));
// 16 due to padding added by compiler for optimization of memory flow from
// RAM to CPU.
return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */
/*
*/
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