In this tutorial, we will discuss a concept of C++ program to display integrated pyramid number pattern using while loop
In the C++ programming 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 integrated pyramid number pattern using while loop in C++ language
Program 1
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,row;
cout<<"Enter the number of rows: ";
cin>>row;//gets input from the user
cout<<"\n";
i=1;
while(i<=row){//print upper part
j=i;
while(j<=row){
cout<<j;//print number
j++;
}
i++;
cout<<"\n";//move to next line
}
i=row-1;
while(i>=1){//print lower part
j=i;
while(j<=row){
cout<<j;//print number
j++;
}
i--;
cout<<"\n";//move to next part
}
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;//variable declaration
cout<<"Enter the number of rows: ";
cin>>row;//get input from user
cout<<"\n";
i=1;
while(i<=row){//print upper part
j=1;
while(j<i){
cout<<" ";//print space
j++;
}
j=i;
while(j<=row){
cout<<j;
j++;
}
i++;
cout<<"\n";
}
i=row-1;
while(i>=1){//print lower part
j=1;
while(j<i){
cout<<" ";//print space
j++;
}
j=i;
while(j<=row){
cout<<j;//print number
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: "<< endl;
cin>>row;//gets input from user
cout<<"\n";
i=1;
while(i<=row){//print upper part
j=1;
while(j<=i){
cout<<" ";
j++;
}
j=i;
while(j<=row){
cout<<j;
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;
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 the number of rows\n";
cin>>row;//gets input from user
cout<<"\n";
i=1;
while(i<=row){//print upper part
j=1;
while(j<=row-i){
cout<<" ";
j++;
}
j=1;
while(j<=i){
cout<<j;
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<<j;
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\n";
cin>>rows;//gets input from user
cout<<"\n";
i=1;
while(i<=rows){
j=1;
while(j<=i){
cout<<j;
j++;
}
j=i*2;
while(j<rows*2){
cout<<" ";
j++;
}
k=i;
while( k>=1){
cout<<k;
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\n"<<endl;
cin>>rows;//gets input from user
cout<<"\n";
i=rows;
while(i>=1){
j=1;
while(j<=i){
cout<<j;
j++;
}
j=i*2;
while( j<rows*2-1){
cout<<" ";
j++;
}
k=i;;
while( k>=1){
if(k!=rows)
cout<<k;
k--;
}
cout<<"\n";
i--;
}
getch();
return 0;
}
When the above code is executed, it produces the following results
Program 7
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,k,rows;
cout<<"Enter the number of rows\n";
cin>>rows;//gets input from user
cout<<"\n";
i=rows;
while(i>=1){//print upper part
j=1;
while(j<=i){
cout<<j;
j++;
}
cout<<"\n";
i--;
}
i=1;
while( i<rows){//print lower part
j=1;
while(j<=i){
cout<<j;
j++;
}
cout<<"\n";
i++;
}
getch();
return 0;
}
When the above code is executed, it produces the following results
Program 8
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,k,rows;
cout<<"Enter the number of rows\n"<<endl;
cin>>rows;//gets input from user
cout<<"\n";
i=rows;
while(i>=1){ //parent while loop
j=rows;
while(j>=1+rows-i){
cout<<j;
j--;
}
j=i*2;
while(j<rows*2-1){
cout<<" ";
j++;
}
k=1+rows-i;
while( k<=rows){
if(k!=1)
cout<<k;
k++;
}
cout<<"\n";
i--;
}
getch();
return 0;
}
When the above code is executed, it produces the following results
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