【C语言】在终端输入多行信息，找出包含“ould”的行，并打印改行。

2.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 �C and then.

在终端输出上述的文字，输出

Au,love could you and I with fate conspire

Au,love could you and I with fate conspire

To grasp this sorry scheme of things entire,

Would not we shatter it to bitd �C and then.

Would not we shatter it to bitd �C and then.

其中包含strstr的实现

#include <stdio.h>
int mystrstr(char *s1,char*s2)
{

    if(*s1==0)     //s1 = 0                        
    {
        if(*s2)                               //s2 = 0
            return 0;
        return 0;
    }
    while(*s1)
    {
        int i=0;
        while(1)
        {
            if(s2[i]==0)
                return 1;
            if(s2[i]!=s1[i])
                break;                                               
            i++;
        }
        s1++;
    }
    return 0;
}
void put(int ch)
{	
	char num [50]= {0};
	int i  = 0;
	while((ch = getchar())!=EOF)
	{	
		num[i] = ch;
		i++;
		if(ch == '\n'&& mystrstr(num,"ould"))
		{
			num[i] = '\0';
			printf("%s",num);
			i = 0;
		}
		else if(ch == '\n')
		{
			i = 0;
		}	
	}
	return ;
}