On April 26, 2021
By Karmehavannan
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Categories: do-while, Keyword in C language, Loop, star pattern
Tags: C examples, C language, C pattern, Pattern

C Mirrored and hollow mirrored parallelogram star pattern using Do-while

In this article, we will discuss the concept of C Mirrored and hollow mirrored parallelogram star pattern using Do-while

In this post, we are going to learn how to write a program to print mirrored parallelogram, and mirrored Hollow parallelogram patterns using do-while loop in C programming language.

Display parallelogram star patterns Using Do- while loop

Code to print mirrored parallelogram star pattern

C Mirrored and hollow mirrored parallelogram star pattern using Do-while — Mirrored parallelogram star pattern

Program 1

This program allows the user to enter the number of rows ,columns and any symbols then it will display the mirrored parallelogram star pattern using do-While loop in C programming language

#include <stdio.h>
#include <stdlib.h>
int main() {
    int i,j,rows,columns;
    //integer variable declaration
    char ch;
    //char variable declaration
    printf("Enter the number of rows\n");
    scanf("%d",&rows); //Reading the user input for number of rows
    printf("Enter the number of columns\n");
    scanf("%d%c",&columns,&ch);  //Reading the user input for number of columns
    printf("Enter the character for pattern\n");
    ch=getchar(); //Reading the user input as symbol for pattern
    printf("\n");
i=1;
   do{//outer while loop
            j=1;
   do{//inner while loop
   printf(" ");//print space
    j++;
   }while( j<=i);
   j=1;
   do{//inner while loop
   printf("%c",ch);//print symbol after space
    j++;
}while(j<=columns);
 printf("\n");//move to next line
 i++;
} while( i<=rows);
getch();
    return 0;
}

When the above code is executed, it produces the following result

Code to print Hollow mirrored parallelogram star pattern

Program 2

This program allows the user to enter the number of rows ,columns and any symbols then it will display the mirrored Hollow parallelogram star pattern using do-While loop in C programming language

#include <stdio.h>
#include <stdlib.h>
int main() {
    int i,j,rows,columns;//integer variables declaration
    char ch;//Char variable declaration
    printf("Enter the number of rows\n");
    //ask input for rows
    scanf("%d",&rows); //Reading the user input for rows
    printf("Enter the number of columns\n");
    //Ask input from the user for columns
scanf("%d%c",&columns,&ch); //Reading the user input- columns
printf("Enter the character for pattern\n");
ch=getchar();
printf("\n");
i=1;
do{//outer for loop
        j=1;
 do{//inner for loop
   printf(" ");//print space
 j++;
   }while(j<=i);
   j=1;
   do{//inner for loop
   if(i==1 || i==rows || j==1 || j==columns){
   printf("%c",ch);//print symbol after space
   }
   else{
         printf(" ");//print space
   }
    j++;
}while(j<=columns);
 printf("\n");//move to next line
  i++;
}while(i<=rows);
getch();
    return 0;
}

When the above code is executed, it produces the following result