当我尝试在codeblocks编译器中运行此程序时，strstr（）函数每次都返回0。为什么？

I was making a program to search a track from a list of tracks by getting an input string from user.

我正在制作一个程序，通过从用户那里获取输入字符串来从轨道列表中搜索轨道。

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

char tracks[][80] = {
                        "I left my heart in harvard med school",
                        "Newark, newark - a wonderful town",
                        "Dancing with a dork",
                        "From here to maternity",
                        "The girl from Iwo Jima",
};

void find_track(char search_for[])
{
    int i, m = 0;
    for(i = 0; i<5; i++)
    {

the control reaches upto this line of code

控件达到这行代码

        m = strstr(tracks[i], search_for);     
        if(m)
        {
            printf("Track%i : '%s' \n", i, tracks[i]);
        }
    }
}

strstr() returns 0

strstr（）返回0

int main()
{
    char search_for[80];
    printf("Search for : ");
    fflush(stdin);
    fgets(search_for, 80, stdin);
    find_track(search_for);
    return 0 ;

}

1 个解决方案

#1

Please note that fgets includes any trailing newline that was part of the entry. It can be removed like this

请注意，fgets包括作为条目一部分的任何尾随换行符。它可以像这样删除

search_for [ strcspn(search_for, "\r\n") ] = 0;   // remove trailing newline etc

otherwise you won't find a match.

否则你找不到匹配。

Note that fflush(stdin); is non-standard. Note too that the scanf given in one of the linked answers stops at the first whitespace, unless you use certain formatting to prevent it.

注意fflush（stdin）;是非标准的。另请注意，其中一个链接答案中给出的scanf在第一个空格处停止，除非您使用某些格式来阻止它。

#1