C语言的基本数据类型

https://www.bilibili.com/video/BV1vR4y1H7MY?p=5

#include<stdio.h>
//sizeof 关键字 计算变量或数据类型所占的字节个数
int main()
{
	printf("char size:    %d \n", sizeof(char));
	printf("short size:    %d \n", sizeof(short));
	printf("int size:    %d \n", sizeof(int));
	printf("long int size:    %d \n", sizeof(long int));
	printf("long long size:    %d \n", sizeof(long long));
	printf("float size:    %d \n", sizeof(float));
	printf("double size:    %d \n", sizeof(double));
	printf("long double size:    %d \n", sizeof(long double));
	printf("bool size:    %d \n", sizeof(bool));
	return 0;
}

char size:    1
short size:    2
int size:    4
long int size:    4
long long size:    8
float size:    4
double size:    8
long double size:    8
bool size:    1

字节（byte）是计算机信息技术用于计量存储容量的一种计量单位。

一个字节8位二进制构成。