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C Pattern

The document contains C++ code snippets to print various patterns: a diamond pattern, pyramid pattern, hourglass pattern, inverted pyramid, Floyd's triangle, and Pascal's triangle. For each pattern type, the code uses loops and conditional statements to control the number and position of output characters ("*", spaces, numbers) on each line based on the pattern size and current row/column. It demonstrates using C++ features like functions, loops, conditionals, arrays to programmatically generate common numeric and geometric patterns.

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306 views6 pages

C Pattern

The document contains C++ code snippets to print various patterns: a diamond pattern, pyramid pattern, hourglass pattern, inverted pyramid, Floyd's triangle, and Pascal's triangle. For each pattern type, the code uses loops and conditional statements to control the number and position of output characters ("*", spaces, numbers) on each line based on the pattern size and current row/column. It demonstrates using C++ features like functions, loops, conditionals, arrays to programmatically generate common numeric and geometric patterns.

Uploaded by

chakrabortyanjishnu9332
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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1.

Write a Program to Print a Diamond Pattern

*
***
*****
*******
*****
***
*

 C++

// C++ program to print


// Diamond shape
#include <iostream>
using namespace std;

void printDiamond(int n)
{
int space = n - 1;

for (int i = 0; i < n; i++) {


for (int j = 0; j < space; j++)
cout << " ";

// Print i+1 stars


for (int j = 0; j <= i; j++)
cout << "* ";

cout << endl;


space--;
}

space = 0;

// run loop (parent loop)


for (int i = n; i > 0; i--) {
for (int j = 0; j < space; j++)
cout << " ";

// Print i stars
for (int j = 0; j < i; j++)
cout << "* ";

cout << endl;


space++;
}
}

int main()
{
printDiamond(5);
return 0;
}

2. Write a Program to Print a Pyramid Pattern

*
***
*****
*******

 C++

// C++ Program to
// Print Pyramid pattern
#include <iostream>
using namespace std;

void pattern(int n)
{
int k = 2 * n - 2;

for (int i = 0; i < n; i++) {

for (int j = 0; j < k; j++)


cout << " ";

k = k - 1;
for (int j = 0; j <= i; j++) {
// Printing stars
cout << "* ";
}
cout << endl;
}
}

int main()
{
int n = 5;

pattern(n);
return 0;
}

3. Write a Program to Print the Hourglass Pattern

* * * * * * * * *
* * * * * * *
* * * * *
* * *
*
* * *
* * * * *
* * * * * * *
* * * * * * * * *

 C++

// C Program to print hourglass pattern


#include <iostream>
using namespace std;

// function to print hourglass pattern


void hourglass(int rows)
{

// first outer loop to iterate each row


for (int i = 0; i < 2 * rows - 1; i++) {

// assigning comparator
int comp;
if (i < rows) {
comp = 2 * i + 1;
}
else {
comp = 2 * (2 * rows - i) - 3;
}

// first inner loop to print leading spaces


for (int j = 0; j < comp; j++) {
cout << ' ';
}
// second inner loop to print star *
for (int k = 0; k < 2 * rows - comp; k++) {
cout << "* ";
}
cout << '\n';
}
}

int main()
{
hourglass(5);
return 0;
}

4. Write a Program to print an Inverted Pyramid


 C++

// C++ Program to print inverted pyramid


#include <iostream>
using namespace std;

int main()
{
int rows = 5;

for (int i = rows; i >= 1; i--) {


for (int j = rows; j > i; j--) {
cout << " ";
}
for (int k = 1; k <= (2 * i - 1); k++) {
cout << "*";
}
cout << endl;
}

return 0;
}

Output
*********
*******
*****
***
*

5. Write a Program to Print Floyd’s Triangle

1
2 3
4 5 6
7 8 9 10

 C++

// C Program to print the Floyd's Triangle


#include <stdio.h>

int main()
{
int rows = 4;
int n = 1;

// outer loop to print all rows


for (int i = 0; i < rows; i++) {

// innter loop to print abphabet in each row


for (int j = 0; j <= i; j++) {
printf("%d ", n++);
}
printf("\n");
}
return 0;
}

Write a Program to Print the Pascal Triangle

1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1

 C++
// C++ program to print
// Pascal’s Triangle
#include <iostream>
using namespace std;

void printPascal(int n)
{

int arr[n][n];

for (int line = 0; line < n; line++) {


// Every line has number of integers
// equal to line number
for (int i = 0; i <= line; i++) {
// First and last values in every row are 1
if (line == i || i == 0)
arr[line][i] = 1;
else
arr[line][i] = arr[line - 1][i - 1]
+ arr[line - 1][i];
cout << arr[line][i] << " ";
}
cout << "\n";
}
}

int main()
{
int n = 6;
printPascal(n);
return 0;
}

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