Half Pyramid Number Pattern in C4 min read

In this tutorial, we will learn and write codes for various half pyramids number patterns in C programming language. However, in this tutorial, we will create a numeric pattern in C using for loop. So you may go through the following topic in C.

  • for loop in C : loops plays a key role to achieve various patterns in any programming language. Mastering patterns means having excellent grasp at loops.

Half Pyramid Number Pattern in C

We will look at the following topic of pyramid patterns in C. Each of the programs is consists of different number patterns.

  • Right half pyramid
  • Inverted right half pyramid

Right half Pyramid Pattern

Pattern 1: Also called the right triangle pattern.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
#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("%d ", j);
    }
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

Pattern 2:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
#include <stdio.h>
 
int main()
{
  int rows, count = 1;
 
  printf("Enter the number of rows: ");
  scanf("%d", &rows);
 
  for (int i = 1; i <= rows; i++)
  {
    for (int j = 1; j <= i; j++)
    {
      printf("%d ", count);
      ++count;
    }
 
    printf("\n");
  }
 
  return 0;
}

Enter the number of rows: 4
1
2 3
4 5 6
7 8 9 10

Pattern 3: Pattern with a binary number in C

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
#include <stdio.h>
 
int main()
{
  int i, j, rows;
 
  printf("Enter the number of rows: ");
  scanf("%d", &rows);
 
  for (i = 1; i <= rows; i++)
  {
    for (j = 1; j <= i; j++)
    {
      if (j % 2 == 0)
        printf("0");
      else
        printf("1");
    }
 
    printf("\n");
  }
 
  return 0;
}

Enter the number of rows: 6
1
10
101
1010
10101
101010

Pattern 4: Right-angled triangle pattern

The patterns have a similar number in each row. It can also be called half pyramid number patterns in C.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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("%d ", i);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5

Pattern 5:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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("%d ", i *j);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 10
1
2 4
3 6 9
4 8 12 16
5 10 15 20 25
6 12 18 24 30 36
7 14 21 28 35 42 49
8 16 24 32 40 48 56 64
9 18 27 36 45 54 63 72 81
10 20 30 40 50 60 70 80 90 100

Pattern 6:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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 = rows; j >= i; j--)
      printf("%d ", j);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
5
5 4
5 4 3
5 4 3 2
5 4 3 2 1

Pattern 7:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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 = rows; j >= i; j--)
      printf("%d ", i);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
5
4 4
3 3 3
2 2 2 2
1 1 1 1 1

Inverted right half Pyramid Pattern

Pattern 1:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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("%d ", j);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 6
1 2 3 4 5 6
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1

Pattern 2:

Half inverted right-angled triangle with decreasing order.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
#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 = i; j >= 1; j--)
    {
      printf("%d ", j);
    }
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
5 4 3 2 1
4 3 2 1
3 2 1
2 1
1

Pattern 3:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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("%d ", i);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
5 5 5 5 5
4 4 4 4
3 3 3
2 2
1

Pattern 4:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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 = rows; j >= i; j--)
      printf("%d ", j);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
5 4 3 2 1
5 4 3 2
5 4 3
5 4
5

Pattern 5:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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 = i; j <= rows; j++)
      printf("%d ", j);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
1 2 3 4 5
2 3 4 5
3 4 5
4 5
5

Pattern 6:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#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 = i; j <= rows; j++)
      printf("%d ", i);
 
    printf("\n");
  }
 
  return 0;
}

Enter the no. of rows: 5
1 1 1 1 1
2 2 2 2
3 3 3
4 4
5

MORE

Java Program to find the sum of the Largest Forward Diagonal

in this tutorial, we will write a java program to find the sum of the Largest Forward Diagonal in an Arraylist (matrix). Java Program to …

Read More

C Program to search an element in an array using Pointers

A separate function( search_function()) will be created where the array pointer will be declared and the searched element along with the size of an array …

Read More

C Program to find the sum of the digits of a number using recursion function

This C program calculates the sum of digits of a given number using recursion. Here’s a concise explanation: Function Definition: sumDigits(int n) This function calculates …

Read More

C program to find factorial of a number using Ternary operator with Recursion

Recursion refers to the function calling itself directly or in a cycle. Before we begin, you should have the knowledge of following in C Programming: …

Read More

C Program to Add Two Numbers Using Call by Reference

The program takes the two numbers from the user and passes the reference to the function where the sum is calculated. You may go through …

Read More

Find the output ab, cd, ef, g for the input a,b,c,d,e,f,g in Javascript and Python

In this tutorial, we will write a program to find a pairs of elements from an array such that for the input [a,b,c,d,e,f,g] we will …

Read More