c++中的字符串长度怎么写
时间: 2024-05-18 21:13:59 浏览: 73
在C语言中,可以使用strlen()函数来计算字符串的长度。该函数需要包含头文件<string.h>或<cstring>,并且参数必须是字符型指针(char*)。它会从字符串的第一个地址开始遍历,直到遇到结束符'\0',返回的长度不包括'\0'。下面是一个示例代码:
```c
#include <stdio.h>
#include <string.h>
int main(){
char str<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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