getline函数实现

getline()函数是一个常用的C语言函数，用于从输入流中读取一行字符并存储到字符数组中。下面是getline()函数的实现代码：

int getline(char s[], int lim) {
    int c, i;
    for (i = 0; i < lim - 1 && (c = getchar()) != EOF && c != '\n'; i++)
        s[i = c;
    if (c == '\n') {
        s[i = c;
        i++;
    }
    s[i = '\0';
    return i;
}

该函数接受两个参数，一个是字符数组s，用于存储读取到的字符；另一个是整数lim，表示字符数组s的最大长度。函数会逐个读取输入的字符，直到达到lim的上限、遇到文件结束符EOF或遇到换行符'\n'为止。在读取过程中，将字符存储到字符数组s中，并在数组末尾添加'\0'作为字符串的结束符。函数返回值为实际读取到的字符数（不包括结束符）。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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