いろいろなデータ型の最大値、最小値

色々なデータ型の最大値、最小値のコピペ。自分の環境でIntとかがどれくらいの範囲の値を使えるのか知っておくのは大事だと思う。

#include <stdio.h>
#include <limits.h>

int main()
{
  printf("char size: %d\n", CHAR_BIT);
  printf("char max: %d\n", CHAR_MAX);
  printf("char min: %d\n", CHAR_MIN);
  printf("int max: %d\n", INT_MAX);
  printf("int min: %d\n", INT_MIN);
  printf("long max: %ld\n", LONG_MAX);
  printf("long min: %ld\n", LONG_MIN);
  printf("long long max: %lld\n", LLONG_MAX);
  printf("long long min: %lld\n", LLONG_MIN);
  printf("singed char max: %d\n", SCHAR_MAX);
  printf("signed char min: %d\n", SCHAR_MIN);
  printf("short max: %d\n", SHRT_MAX);
  printf("short min: %d\n", SHRT_MIN);
  printf("unsigned char max: %d\n", UCHAR_MAX);
  printf("unsigned int max: %u\n", UINT_MAX);
  printf("unsigned long max: %lu\n", ULONG_MAX);
  printf("unsigned short max: %u\n", USHRT_MAX);
  printf("unsigned long long max: %llu\n", ULLONG_MAX);

  return 0;
}

結果も同じで

char size: 8
char max: 127
char min: -128
int max: 2147483647
int min: -2147483648
long max: 9223372036854775807
long min: -9223372036854775808
long long max: 9223372036854775807
long long min: -9223372036854775808
singed char max: 127
signed char min: -128
short max: 32767
short min: -32768
unsigned char max: 255
unsigned int max: 4294967295
unsigned long max: 18446744073709551615
unsigned short max: 65535
unsigned long long max: 18446744073709551615

だった。