In this tutorial, we will discuss the concept of Cpp program to display patterns using do while loop.
In Cpp language, we can use for loop, while loop, do-while loop to display various number, star, alphabet and binary number patterns
In this topic, we demonstrate how to display print some number and star patterns using the nested do-while loop in Cpp language.
Program 1
#include <iostream> #include <conio.h> using namespace std; int main() { int i=0; do{ int j=1; while(j<=7) { cout<<j; j++; } cout<<"\n"; i++; } while(i<=7); getch(); return 0; }
When the above code is compiled and executed, it produces the following results
1234567 1234567 1234567 1234567 1234567 1234567 1234567 1234567
Program 2
#include <iostream> #include <conio.h> using namespace std; int main() { int i=0; do{ int j=1; while(j<=7) { cout<<"*"; j++; } cout<<"\n"; i++; } while(i<=7); getch(); return 0; }
When the above code is compiled and executed, it produces the following results
******* ******* ******* ******* ******* ******* ******* *******
Program 3
#include <iostream> #include <conio.h> using namespace std; int main() { int row=1,column=1; int i; do{ do{ i--; }while(i>=row); column=1; do{ cout<<column; cout<<" "; column++; }while(column<=row); cout<<"\n"; row++; }while(column<=8); getch(); return 0; }
When the above code is compiled and executed, it produces the following results
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 6 7 1 2 3 4 5 6 7 8
Program 3
#include <iostream> #include <conio.h> using namespace std; int main() { int row=1,column=1; int i; do{ do{ i--; }while(i>=row); column=1; do{ cout<<"*"; cout<<" "; column++; }while(column<=row); cout<<"\n"; row++; }while(column<=8); getch(); return 0; }
When the above code is compiled and executed, it produces the following results
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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