求助 为什么在在线IDE上运行也没问题 但是提交之后就全部TLE啊？

FireWolf @ 2021-02-28 19:53:05

#include <stdio.h>

int main(void)
{
    int n;
    char ch;

    scanf("%d", &n);
    n = n % 26;
    getchar();
    getchar();

    while ((ch = getchar()) != '\r')
        putchar((ch - 'a' + n) % 26 + 'a');

    return 0;
}

by BMTXLRC @ 2021-02-28 19:54:04

运行没问题只代表没有CE，不代表TLE吧（（（

by dhclient_eth1 @ 2021-02-28 19:54:50

@FireWolf TLE:超出时间限制

by Water_Cows @ 2021-02-28 19:59:40

#include <stdio.h>

int main(void)
{
    int n;
    char ch;

    scanf("%d", &n);
    n = n % 26;
    getchar();
    getchar();

-    while ((ch = getchar()) != '\r')
        putchar((ch - 'a' + n) % 26 + 'a');
+       while ((ch = getchar()) != EOF)
    return 0;
}

后面可能没有字符了，以后写这种就是直接写 while(... != EOF) 或者 while(~...)

by Water_Cows @ 2021-02-28 20:00:44

就是把 while ((ch = getchar()) != '\r') 改成 while ((ch = getchar()) != EOF) 即可，强烈建议这种字符串的题用 cin

by _caiji_ @ 2021-02-28 20:01:54

@Water_Cows 我scanf(" %c",&ch)什么时候才能站起来

by FireWolf @ 2021-02-28 20:07:21

@Water_Cows 解决了，感谢诸位大佬！ @caijianhong @Thujoars @BMTXLRC

by Argon_Cube @ 2021-02-28 20:12:12

@caijianhong 站不起来

by Mine_King @ 2021-02-28 20:29:47

@caijianhong 站不起来

讲道理getchar又比scanf快又能实现和scanf一样的效果这还咋站起来啊QAQ

by _caiji_ @ 2021-02-28 20:30:33

@Mine_King scanf(" %c",&ch)能过滤空格

by ZBAA_MKC @ 2021-02-28 21:27:11

c++的getline不香么