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C Program to Print Pyramid Pattern of Alphabets

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In this tutorial, we will learn and code many alphabet patterns in C programming language. However, in this tutorial, we will create a pyramid pattern using characters in C using for loop. So you may go through the following topic in C.

C Alphabet Pattern program 1: Full Pyramid Pattern of Alphabets

Enter the no. of rows: 5
     A 
   A B 
  A B C 
 A B C D 
A B C D E

Source Code:

#include <stdio.h>

void main()
{
  int rows, i, j, k;

  printf("Enter the no. of rows: ");
  scanf("%d", &rows);

  // ASCII value of alphabet 'A'
  int alphabet = 65;

  for (i = 0; i <= rows - 1; i++)
  {
    for (j = rows - 1; j > i; j--)
      printf(" ");

    for (k = 0; k <= i; k++)
      printf("%c ", (char)(alphabet + k));

    printf("\n");
  }

  getch();
}

C Alphabet Pattern program 2: Inverted Full Pyramid Pattern of Alphabets

Enter the no. of rows: 5
 A B C D E 
  A B C D 
   A B C 
    A B 
     A

Source Code:

#include <stdio.h>

void main()
{
  int rows, i, j, k;

  printf("Enter the no. of rows: ");
  scanf("%d", &rows);

  // ASCII value of alphabet 'A'
  int alphabet = 65;

  for (i = 0; i <= rows - 1; i++)
  {
    for (int j = 0; j <= i; j++)
      printf(" ");

    for (k = 0; k <= rows - 1 - i; k++)
      printf("%c ", (char)(alphabet + k));

    printf("\n");
  }

  getch();
}

C Alphabet Pattern program 4:

Another full pyramid with a different pattern.

Enter the no. of rows: 5
       A
      B B
    C C C
   D D D D
  E E E E E
 F F F F F F

Source Code:

#include <stdio.h>

void main()
{
  int rows, i, j, k;

  printf("Enter the no. of rows: ");
  scanf("%d", &rows);

  // ASCII value of alphabet 'A'
  int alphabet = 65;

  for (i = 0; i <= rows; i++)
  {
    for (j = 1; j <= rows - i; j++)
      printf(" ");

    for (k = 0; k <= i; k++)
      printf(" %c", (char)(i + alphabet));

    printf("\n");
  }

  getch();
}

C Alphabet Pattern program 5:

Enter the no. of rows: 5
A
B A B
C B A B C
D C B A B C D
E D C B A B C D E

Source Code:

#include <stdio.h>

void main()
{
   int rows, i, j;

   printf("Enter the no. of rows: ");
   scanf("%d", &rows);

   for (i = 1; i <= rows; i++)
   {
      for (j = 1; j <= rows - i; j++)
         printf("  ");

      for (j = i; j > 0; j--)
         printf(" %c", (char)(j + 64));

      for (j = 2; j <= i; j++)
         printf(" %c", (char)(j + 64));

      printf("\n");
   }
}

C Alphabet Pattern program 6:

Enter the no. of rows: 6
A
ABA
ABCBA
ABCDCBA
ABCDEDCBA
ABCDEFEDCBA

Source Code:

#include <stdio.h>

void main()
{
   int rows, i, j;

   printf("Enter the no. of rows: ");
   scanf("%d", &rows);

   for (i = 1; i <= rows; i++)
   {
      for (j = 1; j <= rows - i; j++)
         printf(" ");

      for (j = 1; j <= i; j++)
         printf("%c", (char)(j + 64));

      for (j = i - 1; j >= 1; j--)
         printf("%c", (char)(j + 64));

      printf("\n");
   }
}

C Alphabet Pattern program 7:

Enter the no. of rows: 5
A B C D E F G H I
A B C D E F G
A B C D E
A B C
A

Source Code:

#include <stdio.h>

void main()
{
   int rows, i, j, l = 1, k;

   printf("Enter the no. of rows: ");
   scanf("%d", &rows);

   for (i = rows; i >= 1; i--)
   {
      for (j = 1; j <= l; j++)
         printf("  ");

      for (k = 1; k <= (2 *i - 1); k++)
         printf("%c ", 'A' + k - 1);

      l++;
      printf("\n");
   }
}

C Alphabet Pattern program 8: Inverted Pyramid pattern using while loop

Enter the no. of rows: 5
A B C D E D C B A
A B C D C B A
A B C B A
A B A
A

Source Code:

#include <stdio.h>

void main()
{
   int rows, i, j, l = 1, k;

   printf("Enter the no. of rows: ");
   scanf("%d", &rows);

   i = rows;
   while (i >= 1)
   {
      j = 1;
      while (j <= rows - i)
      {
         printf("  ");
         j++;
      }

      j = 1;
      while (j <= 2 *i - 1)
      {
         if (j <= i)
         {
            printf("%c", (char)(j + 64));
            printf(" ");
         }
         else
         {
            printf("%c", (char)(2 *i - j + 64));
            printf(" ");
         }
         j++;
      }

      i--;
      printf("\n");
   }
}

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