C++ program to print pyramid pattern of numbers

Write a program in C to make such a pattern like a pyramid with numbers increased by 1. The pattern is as follows:

Flowchart of C++ program to print pyramid pattern of numbers

C++ program to print pyramid pattern of numbers

#include<iostream>
using namespace std;
int main()
{
	int s,r ,i,j,k;
cout<<"Please input number of rows:  ";
cin>>r;
s=(r+4)-1;
  i=1;
  do
  {
  	k=s;
  	do
  	{
  		cout<<" ";
  		k--;
	  }
	  while(k>=1);
	  j=1;
	  do
	  {
	  	cout<<"* ";
	  	j++;
	  }
	  while(j<=i);
	  cout<<endl;
	  s--;
	  i++;
    }
    while(i<=r);
}

#include<iostream>

using namespace std;

int main()

{

int s,r ,i,j,k;

cout<<"Please input number of rows: ";

cin>>r;

s=(r+4)-1;

i=1;

{

k=s;

{

cout<<" ";

k--;

}

while(k>=1);

j=1;

{

cout<<"* ";

j++;

}

while(j<=i);

cout<<endl;

s--;

i++;

}

while(i<=r);

}

Output

Excercise

Find the possible mistakes in the following Shamil’s Flow Table of the C++ program to print pyramid pattern of numbers.

loop r=3	condition	What line will Execute	Actual work to do	what we are getting as output in each step
k=s ,s=6 k=6		1,2,3,4,5,6,7,8,9,10,11, 12, 13, 14,15,16,17	k—	_
k=5	True	1,2,3,4,5,6,7,8,9,10,11, 12, 13, 14, 15,16,17,18, 13, 14,15,16,17	k—	__
k=4	True	1,2,3,4,5,6,7,8,9,10,11, 12, 13, 14, 15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16,17	k—	___
k=3	True	1,2,3,4,5,6,7,8,9,10,11, 12, 13, 14, 15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16,17 18,13, 14,15,16,17	k—	____
k=2	True	1,2,3,4,5,6,7,8,9,10,11, 12, 13, 14, 15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16,17 18,13, 14,15,16,17,18,13, 14, 15,16,17	k—	_____
k=1	True	1,2,3,4,5,6,7,8,9,10,11, 12, 13, 14,15, 16,17,18, 14,15,16,17,18,13, 14,15,16,17 18, 13, 14,15,16,17,18,13, 14, 15,16,17,18, 13, 14,15,16,17	k—	______
k=0 j=1	False for k=0 True for j=1	1,2,3,4,5,6,7,8,9,10,11, 12, 13, 14,15,16,17, 18,13, 14,15,16,17, 18,13, 14,15,16,17 18,13, 14,15,16,17,18,13, 14,15,16,17,18, 13, 14,15,16, 17,18,19,20,21,22,23,24	j++	______*
j=2	False for j=2	1,2,3,4,5,6,7,8,9,10,11, 12, 13, 14,15,16, 17,18, 13, 14,15,16,17,18,13, 14,15,16,17 18, 13, 14,15,16,17,18, 13, 14,15, 16,17,18, 13, 14,15,16,17,18, 19,20,21,22,23, 24,25,26,27,28,29	“/n” s— i++
i=2 K=s , s=5	True	30,10,11, 12, 13, 14,15,16,17	K–	______* _
I=2 K=4	True	30,10,11, 12, 13, 14,15,16,17,18, 13, 14,15,16,17	K–	______* __
I=2 K=3	True	30,10,11, 12, 13, 14,15,16,17, 18,13, 14,15,16,17,18,13, 14,15,16,17	K–	______* __
I=2 K=2	True	30,10,11, 12, 13, 14,15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16,17, 18,13, 14,15,16,17	K–	______* ___
I=2 K=1	True	30,10,11, 12, 13, 14,15,16,17,18,13, 14,15,16,17,18,13, 14,15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16,17	K–	______* ____
I=2 J=1 K=0	False for k=0 True for j=1	30,10,11, 12, 13, 14,15,16,17,18,13, 14,15,16,17,18,13, 14,15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16, 17,18,19,20,21,22,23, 24	J++	______* _____*
I=2 J=2		30,10,11, 12, 13, 14,15,16,17,18,13, 14,15,16,17,18,13, 14,15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16, 17,18,19,20,21,22,23, 24,25,20,21,22,23,24	J++	______* ______
I=2 J=3	False	30,10,11, 12, 13, 14,15,16,17,18,13, 14,15,16,17,18,13, 14,15,16,17,18,1 3,14,15,16,17,18,13, 14,15,16,17, 18,19,20,21,22,23, 24,25,20,21,22,23,24,25,26, 27,28,29	“/n” S– i++
I=3 S=4, K=s, k=4	True	30,10,11, 12, 13, 14,15,16,17	k– k=3	______* ______ _
i=3 k=3	True	30,10,11, 12, 13, 14,15,16,17, 18,13, 14,15,16,17	k– k=2	______* ______ __
i=3 k=2	True	30,10,11, 12, 13, 14,15,16,17, 18,13, 14,15,16,17,18, 13, 14,15,16,17	k– k=1	______* ______ ___
i=3 k=1	True	30,10,11, 12, 13, 14,15,16,17, 18,13, 14,15,16,17,18, 13, 14, 15,16,17,18,13, 14,15,16,17	k–	______* ______ ___
i=3 k=0 j=1	False for k=0 True for j=1	30,10,11, 12, 13, 14,15,16,17, 18,13, 14,15,16,17,18, 13, 14, 15,16,17,18,13, 14,15, 16,17,18,19,20,21,22,23, 24	j++	______* ______ ____*
i=3 j=2	True	30,10,11, 12, 13, 14,15,16,17, 18,13, 14,15,16,17,18,13, 14, 15,16,17,18,13, 14,15,16,17, 18,13, 14,15,16,17,18,19,20,21,22,23, 24,25,20,21,22,23,24	j++	______* ______ _____
i=3 j=3	True	30,10,11, 12, 13, 14,15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16, 17,18,13, 14,15,16,17,18,13, 14, 15,16,17,18,19,20,21,22,23, 24,25,20,21,22,23,24, 25,20, 21,22,23,24	j++	______* ______ ______*
i=3 j=4	False	30,10,11, 12, 13, 14,15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16, 17,18,13, 14,15,16,17,18,13, 14, 15,16,17,18,19,20,21,22,23, 24,25,20,21,22,23,24, 25,20,21, 22,23,24,25,26,27,28,29	“/n” s– i++
i=4	False	30,10,11, 12, 13, 14,15,16,17,18, 13, 14,15,16,17,18,13, 14,15,16, 17,18,13, 14,15,16,17,18,13, 14,15,16,17,18,19,20,21,22,23, 24,25,20,21,22,23,24, 25,20,21,22,23,24,25,26,27, 28,29,30,31		End

C++ program to print pyramid pattern of numbers
By: Prof. Dr. Fazal Rehman | Last updated: October 21, 2023

Flowchart of C++ program to print pyramid pattern of numbers

C++ program to print pyramid pattern of numbers

Excercise

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