Author: admin

In this tutorial, we will write a program to print half hourglass pattern in C. Before that, you may go through the following topic in C.

• for loop in C

1. Right half hourglass pattern in C

#include <stdio.h>

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

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

  for (i = rows - 1; i >= 0; i--)
  {
    for (j = i; j >= 0; j--)
    {
      printf("* ");
    }
    printf("\n");
  }

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

  return 0;
}

Enter the no. of rows: 5
* * * * *
* * * *
* * *
* *
*
*
* *
* * *
* * * *
* * * * *

---

2. Left half hourglass pattern in C

#include <stdio.h>

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

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

  printf("Output: \n\n");
  //upper half
  for (i = 1; i <= rows; i++)
  {
    for (k = 1; k < i; k++)
      printf(" ");

    for (j = i; j <= rows; j++)
      printf("*");

    printf("\n");
  }

  //lower half
  for (i = rows - 1; i >= 1; i--)
  {
    for (k = 1; k < i; k++)
      printf(" ");

    for (j = i; j <= rows; j++)
      printf("*");

    printf("\n");
  }

  return 0;
}

Output:

---

We will write two different patterns diamond shape programs in C. So you may go through the following topic in C first.

• for loop in C

1. Right half diamond pattern in C

#include <stdio.h>

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

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

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

    printf("\n");
  }

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

    printf("\n");
  }

  return 0;
}

Enter the no. of rows: 5
*
* *
* * *
* * * *
* * * * *
* * * *
* * *
* *
*

---

2. Left half diamond pattern in C

#include <stdio.h>

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

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

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

    for (k = 1; k <= i; k++)
      printf("*");

    printf("\n");
  }

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

    for (k = 1; k < i; k++)
      printf("*");

    printf("\n");
  }

  return 0;
}

Enter the no. of rows: 5
    *
   **
  ***
 ****
*****
 ****
  ***
   **
    *

---

In this tutorial, we will write two different pyramid pattern programs using stars in C. Before that, you may go through the following topic in C.

• for loop in C

1. Full Pyramid Pattern Program in C

#include <stdio.h>

int main()
{
  int i, space, rows, k = 0;

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

  for (i = 1; i <= rows; ++i, k = 0)
  {
    for (space = 1; space <= rows - i; ++space)
      printf("  ");

    while (k != 2 *i - 1)
    {
      printf("* ");
      ++k;
    }

    printf("\n");
  }

  return 0;
}

Enter the no. of rows: 6
          * 
        * * * 
      * * * * * 
    * * * * * * * 
  * * * * * * * * * 
* * * * * * * * * * * 

---

2. Inverted full pyramid using * in C

Inverted full Pyramid pattern in C.

#include <stdio.h>

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

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

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

    for (j = i; j <= 2 *i - 1; ++j)
      printf("* ");

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

    printf("\n");
  }

  return 0;
}

Enter the no. of rows: 6
* * * * * * * * * * * 
  * * * * * * * * * 
    * * * * * * * 
      * * * * * 
        * * * 
          * 

---

In this tutorial, we will write a program to display half pyramid patterns in C programming language. We will create a star pattern in C using for loop. So you may go through the following topic in C.

• for loop in C

---

1. Right half pyramid in C

Right angle triangle pattern in C.

#include <stdio.h>

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

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

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

    printf("\n");
  }

  return 0;
}

Enter the no. of rows: 5
*
* *
* * *
* * * *
* * * * *

---

2. Left half pyramid in C

Left right angle triangle pattern in C.

#include <stdio.h>

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

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

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

    for (k = 1; k <= i; k++)
      printf("*");

    printf("\n");
  }

  return 0;
}

Output:

Enter the no. of rows: 5
    *
   **
  ***
 ****
*****

---

3. Inverted right half pyramid pattern in C

#include <stdio.h>

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

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

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

    printf("\n");
  }

  return 0;
}

Enter the no. of rows: 6
* * * * * *
* * * * *
* * * *
* * *
* *
*

---

4. Inverted left half pyramid pattern in C

#include <stdio.h>

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

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

  for (i = 1; i <= rows; i++)
  {
    for (j = 1; j <= rows; j++)
    {
      if (j < i)
        printf(" ");
      else
        printf("*");
    }

    printf("\n");
  }

  return 0;
}

Output:

Enter the no. of rows: 8 
********
 *******
  ******
   *****
    ****
     ***
      **
       *

---

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.

• for loop 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");
   }
}

---

In this tutorial, we will write a C program to print a rectangular star pattern. You may go through the following topic on C first.

• for loop in C

Rectangle Star Pattern in C

The program asks for the number of rows and columns that a user wants and prints the result.

#include <stdio.h>

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

  printf("Enter number of rows: ");
  scanf("%d", &rows);

  printf("Enter number of columns: ");
  scanf("%d", &col);

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

    printf("\n");
  }

  return 0;
}

Enter number of rows: 4
Enter number of columns: 7
* * * * * * *
* * * * * * *
* * * * * * *
* * * * * * *

---

In this tutorial, we will write a C program to print a square pattern of any characters. Before that, you may go through the following topics in C.

• for loop in C

Square pattern of character in C

The program simply asks the user to enter the character that you want to print and the side of a square that is to be printed. And using that information inside a for loop, it prints the result.

#include <stdio.h>

int main()
{
  int i, j, rows;
  char ch;

  printf("Enter the character you want to print: ");
  scanf("%c", &ch);

  printf("Enter the side of a Square: ");
  scanf("%d", &rows);

  for (i = 1; i <= rows; i++)
  {
    for (j = 1; j <= rows; j++)
      printf("%c ", ch);

    printf("\n");
  }

  return 0;
}

Output:

Enter the character you want to print: $
Enter the side of a Square: 5
$ $ $ $ $
$ $ $ $ $
$ $ $ $ $
$ $ $ $ $
$ $ $ $ $

---

In this tutorial, we will write a C program to print a square star pattern. Before that, you may go through the following topics in C.

• for loop in C

Square Star pattern in C

The program takes the user input for the number of rows and uses that in a for loop.

#include <stdio.h>

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

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

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

    printf("\n");
  }

  return 0;
}

Output:

Enter the no. of rows: 5
* * * * *
* * * * *
* * * * *
* * * * *
* * * * *

---

In this tutorial, we will write a C program to print half hourglass pattern of characters. Before that, you may go through the following topic in C.

• for loop in C

We will go through the two different half hourglass of alphabets with two different character patterns.

Half Hourglass Alphabet Pattern in C

Pattern 1

#include <stdio.h>

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

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

  //upper part
  for (i = rows; i >= 0; i--)
  {
    int character = 65;
    for (j = 0; j <= i; j++)
      printf("%c ", (char)(character + j));

    printf("\n");
  }

  //lower part
  for (i = 0; i <= rows; i++)
  {
    int character = 65;
    for (j = 0; j <= i; j++)
      printf("%c ", (char)(character + j));

    printf("\n");
  }

  getch();
}

Output:

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

---

Pattern 2

#include <stdio.h>

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

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

  //upper part
  for (i = rows; i >= 0; i--)
  {
    int character = 65;
    for (j = i; j >= 0; j--)
      printf("%c ", (char)(character + j));

    printf("\n");
  }

  //lower part
  for (i = 0; i <= rows; i++)
  {
    int character = 65;
    for (j = i; j >= 0; j--)
      printf("%c ", (char)(character + j));

    printf("\n");
  }

  getch();
}

Output:

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

---