In this tutorial, we will discuss a concept of Display integrated pyramid star pattern in C++ using while loop
In C++ language, we can use for loop ,while loop and do-while loop to display different number (binary, decimal), alphabets or star pattern programs.
In this article, we are going to learn how to Display double pyramid star pattern using while loop in C++ language
integrated pyramid star pattern in C++
Program 1
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,rows;
cout<<"Enter the number of rows for pattern: ";
cin>>rows; //get input from the user for number of rows
i=1;
while(i<=rows){
j=i;
while(j<=rows){ //Print upper part of pattern
cout<<"*";
j++;
}
i++;
cout<<"\n";
}
i=rows-1;
while(i>=1){
j=i;
while(j<=rows){
cout<<"*";
j++;
}
i--;
cout<<"\n";
}
getch();
return 0;
}
When the above code is executed, it produces the following results
Program 2
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,row;
cout<<"Enter the number of rows for pattern :";
cin>>row; //get input from the user for number of rows
i=1;
while(i<=row){
j=1;
while(j<i){ //Print upper part of pattern
cout<<" ";
j++;
}
j=i;
while(j<=row){
cout<<"*";
j++;
}
i++;
cout<<"\n";
}
i=row-1;
while(i>=1){
j=1;
while(j<i){
cout<<" ";
j++;
}
j=i;
while(j<=row){
cout<<"*";
j++;
}
i--;
cout<<"\n";
}
getch();
return 0;
}
When the above code is executed, it produces the following results
Program 3
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,row;
cout<<"Enter the number of rows for pattern: ";
cin>>row; //get input from the user for number of rows
i=1;
while(i<=row){
j=1;
while(j<=i){ //Print upper part of pattern
cout<<" ";
j++;
}
j=i;
while(j<=row){
cout<<"*"<<" ";
j++;
}
i++;
cout<<"\n";
}
i=row-1;
while(i>=1){
j=1;
while(j<=i){
cout<<" ";
j++;
}
j=i;
while(j<=row){
cout<<"*"<<" ";
j++;
}
i--;
cout<<"\n";
}
getch();
return 0;
}
When the above code is executed, it produces the following results
Program 4
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,row;
cout<<"Enter number of rows to display pattern: ";
cin>>row; //get input from the user for number of rows
i=1;
while(i<=row){
j=1;
while(j<=row-i){ //Print upper part of pattern
cout<<" ";
j++;
}
j=1;
while(j<=i){
cout<<"*";
cout<<" ";
j++;
}
i++;
cout<<"\n";
}
i=1;
while(i<=row-1){
j=1;
while(j<=i){
cout<<" ";
j++;
}
j=1;
while(j<=row-i){
cout<<"*";
cout<<" ";
j++;
}
i++;
cout<<"\n";
}
getch();
return 0;
}
When the above code is executed, it produces the following results
Program 5
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,k,rows;
cout<<"Enter the number of rows to display pattern: ";
cin>>rows; //get input from the user for number of rows
i=1;
while(i<=rows){
for(j=1; j<=i; j++){ //Print upper part of pattern
cout<<"*";
}
j=i*2;
while(j<rows*2){
cout<<" ";
j++;
}
k=i;
while( k>=1){
cout<<"*";
k--;
}
cout<<"\n";
i++;
}
getch();
return 0;
}
When the above code is executed, it produces the following results
Program 6
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,k,rows;
cout<<"Enter the number of rows: ";
cin>>rows; //get input from the user for number of rows
i=rows;
while(i>=1){ //parent while loop
j=rows;
while(j>=1+rows-i){ //Print upper part of pattern
cout<<"*";
j--;
}
j=i*2;
while(j<rows*2-1){
cout<<" ";
j++;
}
k=1+rows-i;
while( k<=rows){
if(k!=1)
cout<<"*";
k++;
}
cout<<"\n";
i--;
}
getch();
return 0;
}
When the above code is executed, it produces the following results
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