【C语言】在终端输入多行，找出有“ould”的行，并打印。

<pre name="code" class="cpp">/*
在终端输入多行信息，找出包含"ould"的行，并打印改行
如:
Au,love could you and I with fate conspire
To grasp this sorry scheme of things entire,
Would not we shatter it to bitd - and then.
在终端输出上述的文字，输出
Au,love could you and I with fate conspire
Would not we shatter it to bitd - and then.
*/
#include <stdio.h>
#define MAXLINE 1000  

int getline(char ar[],int max)
{
    int ch;
    int i =0;
    while((ch = getchar())!=EOF && ch != '\n'&& i < max)
    {
        ar[i] = ch;
        i++;
    }
    if(ch == '\n')
        ar[i++] = ch;
    ar[i] = '\0';
    return i;
}  

int compare(char line[],char str[])
{
    int i,j,k;
    for(i = 0;line[i] != '\0';i++)
    {
        for(j = i,k = 0;str[k]!= '\0' &&
            str[k] == line[j];j++,k++)
        {
            ;
        }
        if(k>0 && str[k] == '\0')
            return 1;
    }
    return 0;
}
int main()
{
    char line[MAXLINE];
    char str[] = "ould";  

    while(getline(line,MAXLINE))
    {
        if(compare(line,str))
            printf("%s\n",line);
    }
    return 0;
}