C Program to Print Hollow Pyramid Star

In this tutorial you will learn about the C Program to Print Hollow Pyramid Star and its application with practical example.

C Program to Print Hollow Pyramid Star Pattern

In this tutorial, we will learn to create a C program that will Print the Hollow Pyramid Star Pattern in C programming.

Table Of Contents−

C Program to Print Hollow Pyramid Star Pattern

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following C programming topics:

Operators in C Programming.
Basic Input and Output function in C Programming.

Basic C programming.
For loop in C programming.
Conditional Statements in C programming.

What is Printing Hollow Pyramid Star Pattern?

The Hollow Pyramid star pattern means creating an equilateral triangle-like pattern on the screen for the user. But the Hollow Pyramid pattern uses “*” to draw the pattern borders only. The hollow patterns are the same as normal patterns but they have nothing in the patterns they use to print blank spaces in the center. The normal pyramid has a point on top and there is a base on the bottom.

What is a pattern?

The patterns can be any shape or design drawn on the screen i.e. triangle, rectangle, pyramid, any other shape. In the C programming language, the patterns are generated using loops and iterative statements.

Algorithm:-

1. Declaring the required variables for the program.

2. Taking the input number of rows for <strong>Hollow Pyramid</strong> pattern from the user.

3. Generating the pattern using the nested for loop.

4. Printing the <strong>Hollow Pyramid </strong>shaped pattern.

5. End the program.

1. Declaring the required variables for the program.

2. Taking the input number of rows for <strong>Hollow Pyramid</strong> pattern from the user.

3. Generating the pattern using the nested for loop.

4. Printing the <strong>Hollow Pyramid </strong>shaped pattern.

5. End the program.

Program description:-

In today’s tutorial, we will create a program, that will print a hollow Pyramid Star Pattern using nested for loops. First, we will be taking the size in form of rows from the user. Then we will use nested for loops to create a pattern of hollow Pyramid. Then we will print the pattern using the print function. The hollow Pyramid will start from top to bottom.

Below is an example of Printing a hollow Pyramid Star Pattern.

Program Code:-

#include <stdio.h>//Including the header files
int main() 
{
   //Declaring the required variables for the program.
   int rw, i, j;
   //Taking the input from the user.
   printf("Enter number of rows: ");
   scanf("%d", &rw);
   
   for(i = 1; i<=rw; i++) {
      for(j = 1; j<=(rw-i); j++){ //print the blank spaces before star
         printf(" ");
      }
      if(i == 1 || i == rw){ //for the first and last line, print the
         //stars continuously
         for(j = 1; j<=i; j++) {
            printf("* ");
         }
      } else {
         printf("*"); //in each line star at start and end
         //position
         for(j = 1; j<=2*i-3; j++) { //print space to make hollow
            printf(" ");
         }
         printf("*");
      }
      printf("\n");
   }
}

#include <stdio.h>//Including the header files

int main()

{

//Declaring the required variables for the program.

int rw, i, j;

//Taking the input from the user.

printf("Enter number of rows: ");

scanf("%d", &rw);

for(i = 1; i<=rw; i++) {

for(j = 1; j<=(rw-i); j++){ //print the blank spaces before star

printf(" ");

}

if(i == 1 || i == rw){ //for the first and last line, print the

//stars continuously

for(j = 1; j<=i; j++) {

printf("* ");

}

} else {

printf("*"); //in each line star at start and end

//position

for(j = 1; j<=2*i-3; j++) { //print space to make hollow

printf(" ");

}

printf("*");

}

printf("\n");

}

Output:-

In the above program, we have first initialized the required variable.

rw = it will hold the integer value.

j = it will hold the integer value.
i = it will hold the integer value.

Input the number of rows for the hollow pyramid.

Code to make the pattern on the screen.

Printing output hollow pyramid using the loops & conditional statements and the print function.

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