char x[ ]={“hello”}和char y[ ]={‘a’,‘b’,‘c’,‘d’,‘e’}的数组长度分别为多少,使用C语言代码编写出来
时间: 2024-10-13 07:10:04 浏览: 29
`char x[] = {"hello"};` 这样的声明创建了一个字符数组,包含字符串 "hello" 的所有字符,还包括结束字符串的空字符'\0'。因此,`x`数组的实际长度是6,因为有5个可见字符加上一个隐藏的结束字符。
`char y[] = {'a', 'b', 'c', 'd', 'e'};` 这里定义的是一个包含单个字符的数组,每个元素都是一个单独的字符。所以,`y`数组的长度也是5,因为它包含了5个字符,但没有隐含的结束字符。
以下是使用C语言编写的代码来获取数组长度:
```c
#include <stdio.h>
size_t strlen_char_array(char str[]) {
size_t len = 0;
while (str[len] != '\0') { // 遍历数组直到遇到结束字符
len++;
}
return len;
}
int main() {
char x[] = {"hello"};
char y[] = {'a', 'b', 'c', 'd', 'e'};
int len_x = strlen_char_array(x);
int len_y = strlen_char_array(y);
printf("Length of array x: %d\n", len_x);
printf("Length of array y: %d\n", len_y);
return 0;
}
```
上述代码定义了一个辅助函数`strlen_char_array`,用于计算字符数组的长度。
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