c语言 输出由26个字母组成的26行等腰三角形

#include <stdio.h>

int main() {
    int i, j, k;
    for (i = 1; i <= 26; i++) {
        for (j = 1; j <= 26 - i; j++) {
            printf(" ");
        }
        for (k = 1; k <= i; k++) {
            printf("%c ", 'A' + k - 1);
        }
        for (k = i - 1; k >= 1; k--) {
            printf("%c ", 'A' + k - 1);
        }
        printf("\n");
    }
    return 0;
}

输出结果：

                         A 
                        A B A 
                       A B C B A 
                      A B C D C B A 
                     A B C D E D C B A 
                    A B C D E F E D C B A 
                   A B C D E F G F E D C B A 
                  A B C D E F G H G F E D C B A 
                 A B C D E F G H I H G F E D C B A 
                A B C D E F G H I J I H G F E D C B A 
               A B C D E F G H I J K J I H G F E D C B A 
              A B C D E F G H I J K L K J I H G F E D C B A 
             A B C D E F G H I J K L M L K J I H G F E D C B A 
            A B C D E F G H I J K L M N M L K J I H G F E D C B A 
           A B C D E F G H I J K L M N O N M L K J I H G F E D C B A 
          A B C D E F G H I J K L M N O P O N M L K J I H G F E D C B A 
         A B C D E F G H I J K L M N O P Q P O N M L K J I H G F E D C B A 
        A B C D E F G H I J K L M N O P Q R Q P O N M L K J I H G F E D C B A 
       A B C D E F G H I J K L M N O P Q R S R Q P O N M L K J I H G F E D C B A 
      A B C D E F G H I J K L M N O P Q R S T S R Q P O N M L K J I H G F E D C B A 
     A B C D E F G H I J K L M N O P Q R S T U T S R Q P O N M L K J I H G F E D C B A 
    A B C D E F G H I J K L M N O P Q R S T U V U T S R Q P O N M L K J I H G F E D C B A 
   A B C D E F G H I J K L M N O P Q R S T U V W V U T S R Q P O N M L K J I H G F E D C B A 
  A B C D E F G H I J K L M N O P Q R S T U V W X W V U T S R Q P O N M L K J I H G F E D C B A 
 A B C D E F G H I J K L M N O P Q R S T U V W X Y X W V U T S R Q P O N M L K J I H G F E D C B A 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Y X W V U T S R Q P O N M L K J I H G F E D C B A