\\\022a.0\n字符串长度

以下是两个关于字符串长度的例子：

1. 使用Java编写的获取固定长度随机字符串的方法：

/**
 * 固定长度的随机字符串
 * @param length 长度
 * @return 随机串
 */
public static String getRandStringEx(int length){
    char[] charList = {'0','1','2','3','4','5','6','7','8','9',
                       'a','b','c','d','e','f','g','h','i','j',
                       'k',l','m','n','o','p','q','r','s','t',
                       'u','v','w','x','y','z','A','B','C','D',
                       'E','F','G','H','I','J','K','L','M','N',
                       'O',P','Q','R','S','T','U','V','W','X',
                       'Y','Z'};
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < length; i++) {
        sb.append(charList[(int) (Math.random() * charList.length)]);
    }
    return sb.toString();
}

2. 使用C语言编写的获取字符串长度的方法：

#include <stdio.h>
#include <string.h>

int main(void) {
    char str[] = "\022a.0\n";
    int length = strlen(str);
    printf("字符串长度为：%d\n", length); // 输出：字符串长度为：6
    return 0;
}