001.数据类型之int类型

 

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

int main() {
    //有符号型整形
    int a = 0;
    short int b = 1;
    long int c = 2;
    long long int d = 2;
    //无符号型整形
    unsigned int unsigned_int = 123;
    size_t size_of_int = sizeof(int );
    /**
     * 1.%d中的d表示decimal,有符号的10进制整形
     *  %ld表示long decimal
     *  %lld表示long long decimal
     *  %hd表示short decimal
     * 2.\n表示 new line
     * 3.%u表示无符号的10进制整形
     *   %hu表示unsigned short decimal
     * 4.x = hex 表示16进制 o = oct 表示8进制
     */
    printf("short int:%d\n", sizeof(short int));
    printf("int:%d\n", sizeof(int));
    printf("long int:%d\n", sizeof(long int));
    printf("long long int:%d\n", sizeof(long long int));
    printf("unsigned_int:%d\n", sizeof(unsigned));
    printf("max:int %d  min:%d\n", INT_MAX, INT_MIN);
    printf("max:int %u  min:%d\n", UINT_MAX,0);
    return 0;
}