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C program to print pyramids and patterns

Comprehensive Collection of C Programming Examples

In this example, you will learn how to print half pyramids, inverted pyramids, full pyramids, inverted full pyramids, Pascal's triangle, and Floyd's triangle in C language programming.

To understand this example, you should understand the followingC Language ProgrammingTopic:

This is the list of programs you can find on this page.

Example1:*The half pyramid

*
* *
* * *
* * * *
* * * * *

C Program

#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; ++
         printf("* ");
      }
      printf("\n");
   }
   return 0;
}

Example2:The half pyramid of numbers

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

C Program

#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; ++
         printf("%d \t", j);
      }
      printf("\n");
   }
   return 0;
}

Example3:The half pyramid of letters

A
B B
C C C
D D D D
E E E E E

C Program

#include <stdio.h>
int main() {
   int i, j;
   char input, alphabet = 'A';
   printf("Enter the uppercase character to print in the last row: ");
   scanf("%c", &input);
   for (i = 1; i <= (input - 'A' + 1); ++i) {
      for (j = 1; j <= i; ++
         printf("%c \t", alphabet);
      }
      ++alphabet;
      printf("\n");
   }
   return 0;
}

Example4:*的倒半金字塔

* * * * *
* * * *
* * * 
* *
*

C Program

#include <stdio.h>
int main() {
   int i, j, rows;
   printf("Enter the number of rows: ");
   scanf("%d", &rows);
   for (i = rows; i >= 1; --i) {
      for (j = 1; j <= i; ++
         printf("* ");
      }
      printf("\n");
   }
   return 0;
}

Example5:倒置的数字金字塔

1 2 3 4 5
1 2 3 4 
1 2 3
1 2
1

C Program

#include <stdio.h>
int main() {
   int i, j, rows;
   printf("Enter the number of rows: ");
   scanf("%d", &rows);
   for (i = rows; i >= 1; --i) {
      for (j = 1; j <= i; ++
         printf("%d \t", j);
      }
      printf("\n");
   }
   return 0;
}

Example6:*的完整金字塔

        *
      * * *
    * * * * *
  * * * * * * *
* * * * * * * * *

C Program

#include <stdio.h>
int main() {
   int i, space, rows, k = 0;
   printf("Enter the number of rows: ");
   scanf("%d", &rows);
   for (i = 1; i <= rows; ++i, k = 0) {
      for (space = 1; space <= rows - i; ++space) {
         printf("\t");
      }
      while (k != 2 * i - 1) {
         printf("* ");
         ++k;
      }
      printf("\n");
   }
   return 0;
}

Example7:完整的数字金字塔

        1
      2 3 2
    3 4 5 4 3
  4 5 6 7 6 5 4
5 6 7 8 9 8 7 6 5

C Program

#include <stdio.h>
int main() {
   int i, space, rows, k = 0, count = 0, count1 = 0;
   printf("Enter the number of rows: ");
   scanf("%d", &rows);
   for (i = 1; i <= rows; ++i) {
      for (space = 1; space <= rows - i; ++space) {
         printf("\t");
         ++count;
      }
      while (k != 2 * i - 1) {
         if (count <= rows - 1) {
            printf("%d \t", i + k);
            ++count;
         } else {
            ++count1;
            printf("%d \t", (i + k - 2 * count1))++;
         }
         ++k;
      }
      count1 = count = k = 0;
      printf("\n");
   }
   return 0;
}

Example8:*的倒金字塔

* * * * * * * * *
  * * * * * * *
    * * * * *
      * * *
        *

C Program

#include <stdio.h>
int main() {
   int rows, i, j, space;
   printf("Enter the number of rows: ");
   scanf("%d", &rows);
   for (i = rows; i >= 1; --i) {
      for (space = 0; space < rows - i; ++space)
         printf("\t");
      for (j = i; j <= 2 * i - 1; ++j)
         printf("* ");
      for (j = 0; j < i - 1; ++j)
         printf("* ");
      printf("\n");
   }
   return 0;
}

Example9:Pascal's Triangle

           1
         1   1
       1   2   1
     1   3   3    1
   1  4    6   4   1
 1  5   10   10  5   1

C Program

#include <stdio.h>
int main() {
   int rows, coef = 1, space, i, j;
   printf("Enter the number of rows: ");
   scanf("%d", &rows);
   for (i = 0; i < rows;++) {
      for (space = 1; space <= rows - i; space++)
         printf("\t");
      for (j = 0; j <= i;++) {
         if (j == 0 || i == 0)
            coef = 1;
         else
            coef = coef * (i - j + 1) / j;
         printf("%",4d", coef);
      }
      printf("\n");
   }
   return 0;
}

Example10:Floyd's Triangle.

1
2 3
4 5 6
7 8 9 10

C Program

#include <stdio.h>
int main() {
   int rows, i, j, number = 1;
   printf("Enter the number of rows: ");
   scanf("%d", &rows);
   for (i = 1; i <= rows; i++) {
      for (j = 1; j <= i; ++
         printf("%d \
         ++number;
      }
      printf("\n");
   }
   return 0;
}

Comprehensive Collection of C Programming Examples