Sizes of C data types

sizeof.c

/*
 * gcc -std=c99 -pedantic -Wall sizeof.c && ./a.out
 * clang -std=c99 -pedantic -Wall sizeof.c && ./a.out
 */

#include <stdio.h>
#include <stdbool.h>
#include <time.h>
#include <sys/time.h>

int main(void)
{
  printf("size_t: %zu\n", sizeof(size_t));

  printf("bool: %zu\n", sizeof(bool));
  printf("char: %zu\n", sizeof(char));
  printf("short: %zu\n", sizeof(short));
  printf("int: %zu\n", sizeof(int));
  printf("long: %zu\n", sizeof(long));
  printf("long long: %zu\n", sizeof(long long));

  printf("float: %zu\n", sizeof(float));
  printf("double: %zu\n", sizeof(double));
  printf("long double: %zu\n", sizeof(long double));
  
  printf("clock_t: %zu\n", sizeof(clock_t));
  printf("time_t: %zu\n", sizeof(time_t));
  printf("struct tm: %zu\n", sizeof(struct tm));
  printf("struct timeval: %zu\n", sizeof(struct timeval));
}