[已解决]删除前后空格 并判断是否为回文

倒影Gaara

我不知道哪里错了  输不出来

#include<stdio.h>
#include<string.h>
int main ()
{
        char s[80],ch,*p,*q;
        int n;
        gets(s);
        p=s;
    while(*p==' ')
    *p=*p++;
    n=strlen(s);
    q+=n-1;
    while(*q==' ')
    *q=*q--;
    while(p<q&&*p==*q)
    {
            p++;
            q--;
        }
    if(p<q)
    printf("no\n");
    else
    printf("yes");
}

最佳答案

月排行榜 / 总排行榜

BngThea

2017-12-12 12:22:09

倒影Gaara 发表于 2017-12-12 11:44
题目是到填空题
  #include
#include

那就改成 q = s + n - 1

跳转到最佳答案楼层

BngThea

q没有初始化，怎么可以执行
q+=n-1;

另外gets函数并不靠谱，建议使用fgets函数

倒影Gaara

BngThea 发表于 2017-12-12 11:33
q没有初始化，怎么可以执行
q+=n-1;

那应该怎么初始化  q  ？
我们刚接触指针

BngThea

倒影Gaara 发表于 2017-12-12 11:36
那应该怎么初始化  q  ？
我们刚接触指针

根据你的意思，你应该将它也指向s

倒影Gaara

BngThea 发表于 2017-12-12 11:39
根据你的意思，你应该将它也指向s

题目是到填空题
  #include<stdio.h>
#include<string.h>
int main ()
{
&nbsp; &nbsp; &nbsp; &nbsp; char s[80],ch,*p,*q;
&nbsp; &nbsp; &nbsp; &nbsp; int n;
&nbsp; &nbsp; &nbsp; &nbsp; gets(s);
&nbsp; &nbsp; &nbsp; &nbsp; p=s;
&nbsp; &nbsp; while(*p==' ')
&nbsp; &nbsp; *p=——；
&nbsp; &nbsp; n=strlen(s);
&nbsp; &nbsp; q=——；
&nbsp; &nbsp; while(*q==' ')
&nbsp; &nbsp; ——；
&nbsp; &nbsp; while(——&&*p==*q)
&nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; p++;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ——；
&nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp; &nbsp; if(p<q)
&nbsp; &nbsp; printf("no\n");
&nbsp; &nbsp; else
&nbsp; &nbsp; printf("yes");
}

倒影Gaara

#include<stdio.h>
#include<string.h>
int main ()
{
&nbsp; &nbsp; &nbsp; &nbsp; char s[80],ch,*p,*q;
&nbsp; &nbsp; &nbsp; &nbsp; int n;
&nbsp; &nbsp; &nbsp; &nbsp; gets(s);
&nbsp; &nbsp; &nbsp; &nbsp; p=s;
&nbsp; &nbsp; while(*p==' ')
&nbsp; &nbsp; ——;
&nbsp; &nbsp; n=strlen(s);
&nbsp; &nbsp; q=——;
&nbsp; &nbsp; while(*q==' ')
&nbsp; &nbsp; ——;
&nbsp; &nbsp; while(——&&*p==*q)
&nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; p++;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ——；
&nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp; &nbsp; if(p<q)
&nbsp; &nbsp; printf("no\n");
&nbsp; &nbsp; else
&nbsp; &nbsp; printf("yes");
}

BngThea

倒影Gaara 发表于 2017-12-12 11:44
题目是到填空题
  #include
#include

那就改成 q = s + n - 1

倒影Gaara

BngThea 发表于 2017-12-12 12:22
那就改成 q = s + n - 1

还是输不出来  请问我删除前后空格那里是不是对的啊 ？