求大佬帮助，测试点4WA了

glass_a @ 2019-07-01 09:55:22

#include<stdio.h>
int main()
{
    int j,n,i,k;char a[100],b[100];
    scanf("%d",&n);
    scanf("%s",&a);
    for(k=0;a[k]<='z'&&a[k]>='a';k++);
    j=n/26;
    for(i=0;i<k;i++)
    {
        if(a[i]+n-26*j>'z')
        b[i]=a[i]+n-j*26-'z'+'a';
        else 
        b[i]=a[i]+n-26*j;
    }
    for(i=0;i<k;i++)
    printf("%c",b[i]);
    return 0;
 }

by iceselen @ 2019-07-01 10:09:37

如果你用char的话，ascii在运算过程中可能会爆范围

by glass_a @ 2019-07-01 11:15:43

@iceselen 哦哦，我去看看，谢谢

by glass_a @ 2019-07-01 11:24:00

@iceselen 我用了unsigned char好像还是不行

by iceselen @ 2019-07-01 12:04:12

b[i]=a[i]+n-j*26-'z'+'a';

如果使用unsigned char在某些情况下这行代码运算过程中会产生负数，还是会暴

by glass_a @ 2019-07-01 13:52:20

@iceselen 那我交换一下顺序呢

by iceselen @ 2019-07-02 08:11:07

@glass_a 为什么这么执着于char，换int不就好了