学点 C 语言(13): 数据类型 整型、字符型和浮点型的扩展

整型 int 可添加 short 和 long:
short int:     简为 short;
long int:      简为 long;
long long int: 简为 long long

它们都可以再添加 unsigned:
unsigned int:           简为 unsigned
unsigned short int:     简为 unsigned short
unsigned long int:      简为 unsigned long
unsigned long long int: 简为 unsigned long long

char 可添加 unsigned:
unsigned char

double 可添加 long:
long double

1. short 的最小、最大值:

---

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

int main(void)
{
    short n1 = SHRT_MIN;
    short n2 = SHRT_MAX;
    printf("%d .. %d\n", n1,n2);
    getchar();
    return 0;
}

2. long 的最小、最大值:

---

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

int main(void)
{
    long n1 = LONG_MIN;
    long n2 = LONG_MAX;
    printf("%ld .. %ld\n", n1,n2);
    getchar();
    return 0;
}

3. long long 的最小、最大值:

---

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

int main(void)
{
    long long n1 = LLONG_MIN;
    long long n2 = LLONG_MAX;
    printf("%lld .. %lld\n", n1,n2);
    getchar();
    return 0;
}

4. unsigned 系列的最小值都是 0:

---

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

int main(void)
{
    unsigned short     n1 = USHRT_MAX;
    unsigned           n2 = UINT_MAX;
    unsigned long      n3 = ULONG_MAX;
    unsigned long long n4 = ULLONG_MAX;

    unsigned char       c = UCHAR_MAX;
    
    printf("0 .. %u\n", n1);
    printf("0 .. %u\n", n2);
    printf("0 .. %lu\n", n3);
    printf("0 .. %llu\n", n4);

    printf("\n0 .. %u\n", c);
    
    getchar();
    return 0;
}

5. long double 的最小、最大值:

---

#include <stdio.h>
#include <float.h>

int main(void)
{
    long double ld1 = LDBL_MIN;
    long double ld2 = LDBL_MAX;
    printf("%Le .. %Le\n", ld1,ld2);
    getchar();
    return 0;
}