#include<stdio.h>
int main()
{
    int i,m=1;
    for(i=0;i<26;i++)
        {
            printf("%c",'Z'-i);
            m=m+1;
            if(m==4)
            { printf("\n");
             m=1;
            }
         
         }   
   
    return 0;
}

我是有输入的  输入3就是每行3个  输入2就是每行两个  输入4是每行四个

#include<stdio.h>
int main()
{
    int i,m,n=0;
    printf("请问，想每行显示几个字母？");
    scanf("%d",&m);
    for(i=0;i<26;i++)
        {
            printf("%c",'Z'-i);
            n=n+1;
            if(n==m)
            { printf("\n");
             n=0;
            }
         
         }   
}