Java 和C语言基本数据类型大小

最新推荐文章于 2024-01-10 23:23:22 发布

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本文深入探讨了C语言中各种基本数据类型的大小，包括整型、浮点型、字符型及其无符号版本，通过代码示例展示了不同数据类型占用内存的字节数。此外，还介绍了结构体在内存中的布局。

#include<stdio.h>
struct node
{
	char dept[20];
	int *next;
};

typedef struct{
	char docname[20];
	int no;
	int *prior;
}Node;

int main()
{
	printf("sizeof(int)%d\n",sizeof(int));
	printf("sizeof(unsigned int)%d\n",sizeof(unsigned int));
	printf("sizeof(char)%d\n",sizeof(char));
	printf("sizeof(signed char)%d\n",sizeof(signed char));
	printf("sizeof(unsigned char)%d\n",sizeof(unsigned char));
	printf("sizeof(unsigned short)%d\n",sizeof(unsigned short));
	printf("sizeof(short)%d\n",sizeof(short));
	printf("sizeof(long)%d\n",sizeof(long));
	printf("sizeof(unsigned long) %d\n",sizeof(unsigned long));
	printf("sizeof(float) %d\n",sizeof(float));
	printf("sizeof(double) %d\n",sizeof(double));
	printf("sizeof(double) %d\n",sizeof(double));
	printf("sizeof(node) %d\n",sizeof(node));
	printf("sizeof(Node) %d\n",sizeof(Node));
	return 0;
}

在这里插入图片描述

/**
 * @(#)Main.java
 *
 *
 * @author 
 * @version 1.00 2020/3/4
 */


public class Main{
    public static void main(String[] args){
        System.out.println("Integer.MIN_VALUE "+Integer.MIN_VALUE);
        System.out.println("Integer.MAX_VALUE "+Integer.MAX_VALUE);
        System.out.println("Integer.SIZE "+Integer.SIZE);
        System.out.println("Byte.SIZE "+Byte.SIZE);
        System.out.println("Short.SIZE "+Short.SIZE);
        System.out.println("Long.SIZE "+Long.SIZE);
        System.out.println("Double.SIZE "+Double.SIZE);
        System.out.println("Boolean.TYPE "+Boolean.TYPE);
        System.out.println("Character.SIZE "+Character.SIZE );
    }
}