In this tutorial, we will discuss Cpp program to print diamond star pattern.
In this post, we display two diamond patterns using nested for loop and nested while loop in C++ language
In the first program, we are going to learn how to displayed diamond star pattern using for loop or nested for loop in C++ programming language
here, we display a diamond pattern program with coding using nested for loop and also we get input from user using Cin in C++ language
the user can provide numbers as they wish and get the Diamond star pattern according to their input
Program 1
#include <iostream> #include <conio.h> using namespace std; int main() { int rows,i,j,Num_Of_space=1; cout<<"Enter the number of rows: "; cin>>rows; Num_Of_space=rows-1; for(i=1; i<=rows; i++){ //outer for loop 1 for(j=1; j<=Num_Of_space; j++)//inner for loop for space cout<<" "; Num_Of_space--; for(j=1; j<=2*i-1; j++)//inner for loop for star cout<<"*"; cout<<"\n"; } Num_Of_space=1; for(i=1; i<=rows-1; i++){//outer for loop 2 for(j=1; j<=Num_Of_space; j++) cout<<" ";//inner for loop for space Num_Of_space++; for(j=1; j<=2*(rows-i)-1; j++)//inner for loop for star cout<<"*"; cout<<"\n";//move to next line } getch(); return 0; }
When the above code executed, it produces the following results
Enter the number of rows: 6 * *** ***** ******* ********* *********** ********* ******* ***** *** *
In the second program, we are going to learn how to displayed diamond star pattern using while loop or nested while loop in C++ programming language
here, we displayed a diamond pattern program with coding using nested while loop and also we get input from user using Cin() function in C++ language
the user can provide numbers as they wish and get the Diamond star pattern according to their input
Program 2
#include <iostream> #include <conio.h> using namespace std; int main() { int i=1,j=1,rows; cout<<"Enter the mnumber of rows\n"; cin>>rows; int space=rows-1; while(j<=rows){ //outer while loop 1 cout<<"\n"; j=1; while(j<=space){ //inner while loop for space cout<<" "; j++; } j=1; while(j<=2*i-1){//inner while loop for star cout<<"*"; j++; } i++; space--; } i=rows-1; space=1; while(i>=1){ //outer while loop 2 cout<<"\n"; j=1; while(j<=space){ //inner while loop for space cout<<" "; j++; } j=1; while(j<=2*i-1){//inner while loop for star cout<<"*"; j++; } i--; space++; } getch(); return 0; }
When the above code executed, it produces the following results
Enter the number of rows: 6 * *** ***** ******* ********* *********** ********* ******* ***** *** *
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