In this tutorial you will learn about the C++ Program to Print Diamond of Star and its application with practical example.
In this tutorial, we will learn to create a c++ program that will create Diamond of Stars (*) using c++ programming.
Prerequisites
Before starting with this tutorial we assume that you are best aware of the following C++ programming topics.
- if-else Statements.
- Looping statement.
- Basic input/output.
- Operators.
Diamond of Star.
Using C++ language to print diamond of stars, here we need to print two triangle one in upward direction and one in reverse, simply print first triangle and second triangle is reverse of first triangle.
C++ Program to Creating Diamond of Star.
In this program we will print Diamond of Star.Using nested for loop. We would first declared and initialized the required variables. Then we will create Diamond of Star using below program.
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#include<iostream> using namespace std; int main() { int i, j, rows, space; // declaring variables.. cout<<"Enter number of Rows: "; cin>>rows; // taking number of rows space = rows-1; for(i=1; i<=rows; i++) printing diamond { for(j=1; j<=space; j++) cout<<" "; space--; for(j=1; j<=(2*i-1); j++) cout<<"*"; cout<<endl; } space = 1; for(i=1; i<=(rows-1); i++) { for(j=1; j<=space; j++) cout<<" "; space++; for(j=1; j<=(2*(rows-i)-1); j++) cout<<"*"; cout<<endl; } cout<<endl; return 0; } |
Output
In the above program, we have first declared and initialized a set variables required in the program.
- i & j= for iteration.
- rows= for number of rows.
- space= for printing space.
Here we will use two nested for loop First nested loop creates upper triangular part up-to 3 lines
whereas its lower triangular part up-to 2 (one less than row size) lines.
To print diamond pattern in our program, user will be prompted to enter the number of rows. Now using the row size we will print diamond pattern as shown in the program below.
