C/C++ int、long int 、long long、、 short int 、无符号整型取值范围，代码测试 、C语言无符号整型输出

类型	存储字节	表示范围	无符号范围	大概范围
int / long int	4	-2147483648~2147483647	4294967295	大概10^9
long long	8	-9223372036854775808～+9223372036854775807	1.84467440737e19	大概10^19
short int	2	-32768～+32767	65535	大概10^4

测试代码

int main(){
 printf("int size: %lu byte\n",sizeof(int));  
    printf("short size: %lu byte\n",sizeof(short int));  
    printf("long size: %lu byte\n",sizeof(long int));  
    printf("long long size: %lu byte\n",sizeof(long long int));  
    return 0;  
}

输出结果

C语言无符号整型输出:

把%d->%u

	unsigned int example;
	example=3147483650;
	printf("%u\n",example);
    printf("unsigned int size: %lu byte\n",sizeof(unsigned int));