In this tutorial, we will discuss a simple concept of the Diamond number pattern in C++ language
In this post, we will learn how to create diamond number pattern
we can use for loop, while loop or do while loop to display different types of diamond patterns in C++ language
Here, we will use for loop and nested for loop to print different type of number patterns
Program 1
#include <iostream> using namespace std; int main() { int rows; cout<<"Enter the number of rows: "; cin>>rows; int row=1,i,j,k; for(i=rows/2; i>0; i--){ //print upper part for(j=1; j<=i; j++){ cout<<" "; } for(j=1; j<=row; j++){ cout<<row; cout<<" "; } cout<<"\n";//move to next line row++; } for(i=0; i<=rows/2; i++){ for(j=1; j<=i; j++){ cout<<" "; } for(j=row; j>=1; j--){ //print lower part cout<<row; cout<<" "; } cout<<"\n";//move to next line row--; } return 0; }
When the above code is executed, it produces the following result
Enter the number of rows: 8 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 4 4 4 4 3 3 3 2 2 1
Program 2
#include <iostream> #include <conio.h> using namespace std; int main() { int i,j,k,l,rows; cout<<"|Enter the number of rows: "; cin>>rows; for(i=1; i<=rows; i++){ //print upper part for(j=1; j<=rows-i; j++){ cout<<" ";//print initial space for upper part } for(k=i; k>=1; k--){ cout<<k; } for(l=2; l<=i; l++){ cout<<l; } cout<<"\n";//move to next line } for(i=rows-1; i>=1; i--){ //print lower part for(j=0; j<=rows-1-i; j++){ cout<<" ";//print initial space for lower part } for(k=i; k>=1; k--){ cout<<k; } for(l=2; l<=i; l++){ cout<<l; } cout<<"\n";//move to next line } getch(); return 0; }
When the above code is executed, it produces the following result
Enter the number of rows: 6 1 212 32123 4321234 543212345 65432123456 543212345 4321234 32123 212 1
Program 3
#include <iostream> using namespace std; int main() { int rows; cout<<"Enter the number of rows: "; cin>>rows; int row=1,i,j,k; for(i=1; i<=rows; i++){ //print upper part for(j=1; j<=rows-i; j++){ cout<<" ";//print space } for(k=1; k<=i; k++){ cout<<k; cout<<" "; } cout<<"\n";//move to next line } for(i=1; i<=rows-1; i++){ //print lower part for(j=1; j<=i; j++){ cout<<" "; } for(k=1; k<=rows-i; k++){ cout<<k; cout<<" "; } cout<<"\n";//move to next line } }
When the above code is executed, it produces the following result
Enter the number of rows: 6 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 6 1 2 3 4 5 1 2 3 4 1 2 3 1 2 1
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