C Language Zemi

SIZE_MAX --maximum value of size_t type

SIZE_MAX is a constant macro that represents the maximum value of size_t type. You can use it by include "stdint.h".

This is a sample that outputs SIZE_MAX in a 64-bit Linux environment. %zu is a format specifier that can output a value of type size_t in a portable way.

#include <stdio.h>
#include <stdint.h>

int main (void) {
  
  printf("%zu\n", SIZE_MAX);
}

This is the output result.

18446744073709551615