数组中0和0之间的差值 [英] The difference between 0 and '0' in array

问题描述

我有一个关于数组初始化的问题

I have a question about array initialization

= {0};

和

char a [6] = {'0'，'0' ，'0'，'0'，'0'，'0'};

char a[6]={'0','0','0','0','0','0'};

编译器如何解释上述两个表达式？

How does the compiler interpret the above two expression? Are they just the same or not??

推荐答案

'0'是数字0的 ASCII 字符。其值为48。

'0' is the ASCII character for the number 0. Its value is 48.

常量 0 是一个零字节或空字节，也写成'\0'。

The constant 0 is a zero byte or null byte, also written '\0'.

这四个是等价的：

char a[6] = {0};
char a[6] = {0, 0, 0, 0, 0, 0};
char a[6] = {'\0', '\0', '\0', '\0', '\0', '\0'};
char a[6] = "\0\0\0\0\0"; // sixth null byte added automatically by the compiler

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