C Program to Print Number Pattern
Last Updated : 15 Dec, 2024
A number pattern involves printing numbers in a specific arrangement or shape, often in the form of a pyramid, triangle, or other geometric shapes. They are great for practicing loops and conditional statements. In this article, we will learn how to print different number patterns in C.
Rhombus Number Pattern
The Rhombus Number Pattern pattern looks like a rhombus shape which is nothing but a slightly slanted square filled with numbers starting from 1 to the given size of the edge.
C #include <stdio.h> int main() { int n = 5; // Outer loop to iterate through each row for (int i = 0; i < n; i++) { // First inner loop to print white spaces for (int j = 0; j < n - i - 1; j++) printf(" "); // Second inner loop to print number in each row for (int k = 0; k < n; k++) printf("%d ", k + 1); printf("\n"); } return 0; } Output 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
Right Half Pyramid Pattern
The Right Half Pyramid Pattern pattern forms a right-angled triangle with numbers increasing along each row and aligned to the left.
C #include <stdio.h> int main() { int n = 5; // First loop for printing rows for (int i = 0; i < n; i++) { // Second loop for printing number in each rows for (int j = 0; j <= i; j++) printf("%d ", j + 1); printf("\n"); } return 0; } Output1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
Left Half Pyramid Pattern
The Left Half Pyramid Pattern pattern is similar to the right half pyramid but the numbers are aligned to the left.
C #include <stdio.h> int main() { int n = 5; // Outer loop is for printing the rows for (int i = 0; i < n; i++) { // First inner loop for printing leading whitespaces for (int j = 0; j < 2 * (n - i) - 2; j++) printf(" "); // Second inner loop for printing numbers for (int k = 0; k <= i; k++) printf("%d ", k + 1); printf("\n"); } return 0; } Output 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
Inverted Right Half Pyramid
An Inverted Right Half Pyramid Pattern is a variation of right half triangle pattern flipped 180 vertically.
C #include <stdio.h> int main() { int n = 5; // Outer loop to print all rows for (int i = 0; i < n; i++) { // Inner loop to print the numbers in each row for (int j = 0; j < n - i; j++) printf("%d ", j + 1); printf("\n"); } } Output1 2 3 4 5 1 2 3 4 1 2 3 1 2 1
Inverted Left Half Pyramid Pattern
An Inverted left Half Pyramid Pattern is a variation of left half triangle pattern flipped 180 vertically.
C #include <stdio.h> int main() { int n = 5; // Outer loop for printing all rows for (int i = 0; i < n; i++) { // First inner loop for printing white spaces for (int j = 0; j < 2 * i; j++) printf(" "); // Second inner loop for printing numbers for (int k = 0; k < n - i; k++) printf("%d ", k + 1); printf("\n"); } return 0; } Output1 2 3 4 5 1 2 3 4 1 2 3 1 2 1
Full Pyramid Pattern
A Full Pyramid Pattern consists of numbers arranged in a symmetric equilateral triangular shape. The largest row is at the bottom, and each row above it contains fewer numbers.
C #include <stdio.h> int main() { int n = 5; // Outer loop to print all rows for (int i = 0; i < n; i++) { // First inner loop to print white spaces for (int j = 0; j < 2 * (n - i) - 1; j++) printf(" "); // Second inner loop to print numbers for (int k = 0; k < 2 * i + 1; k++) printf("%d ", k + 1); printf("\n"); } return 0; } Output 1 1 2 3 1 2 3 4 5 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9
Inverted Full Pyramid Pattern
An Inverted Full Pyramid Pattern is a variation of full pyramid pattern rotated upside down.
C #include <stdio.h> int main() { int n = 5; // Outer loop for printing all rows for (int i = 0; i < n; i++) { // First inner loop for printing leading white // spaces for (int j = 0; j < 2 * i; j++) printf(" "); // Second inner loop for printing numbers for (int k = 0; k < 2 * (n - i) - 1; k++) printf("%d ", k + 1); printf("\n"); } } Output1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 1 2 3 4 5 1 2 3 1
Pascal’s Triangle Pattern
Pascal’s triangle is a triangular array of numbers where each number is the sum of the two numbers directly above it. The numbers generally are center aligned.
C #include <stdio.h> int main() { int n = 5; // Outer loop for rows for (int i = 1; i <= n; i++) { // First inner loop for leading white spaces for (int j = 0; j < n - i; j++) printf(" "); // Coefficient int C = 1; // Second inner loop for printing numbers for (int k = 1; k <= i; k++) { printf("%d ", C); C = C * (i - k) / k; } printf("\n"); } return 0; } Output 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1
Floyd’s Triangle Pattern
Floyd’s Triangle is a right-angled triangular pattern of numbers, where the numbers are printed sequentially across rows. Each row contains increasing numbers, starting from 1 in the first row, 2,3in the second row, and so on, until all numbers from 1 to n (the total count) are printed.
C #include <stdio.h> int main() { int n = 4; int c = 1; // Outer loop to print all rows for (int i = 0; i < n; i++) { // Inner loop to print abphabet in each row for (int j = 0; j <= i; j++) printf("%d ", c++); printf("\n"); } return 0; } Output1 2 3 4 5 6 7 8 9 10
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