Sep 5, 2020

C Program to Print Hollow Square Number Pattern with Diagonals

 Ex: Write a C program to print hollow square number pattern with diagonal. How to write a C program to print hollow square number pattern with diagonal. C program to print hollow square number pattern with diagonal.


Input from user:

Enter the number: 9


Expected output:

C program to print hollow square number pattern with diagonals





  Step by step logic of the given program:


To understand this pattern, first you need to understand previous exercises hollow square number pattern.


1. Accept input number from user declare variable say no.


2. Run outer loop from 1 to no, which shows rows in pattern.


3.

Run inner loop from 1 to no 

to print columns in pattern.


4. Inside the inner loop using if statement give conditions to print number:

if(i==1||i==no||j==1||j==no||j==ic||j==dc)


5. Otherwise print spaces.


6. Outside the block of inner for loop, print newline \n.




  C program to print hollow square number pattern with diagonal:


#include<stdio.h>

void main()

{

int no,i,j;

int ic=1,dc;

printf("Enter the number:");

scanf("%d",&no);

dc=no;

for(i=1;i<=no;i++)

{

for(j=1;j<=no;j++)

{

/*Give conditions to print value of j*/                                  if(i==1||i==no||j==1||j==no||j==ic||j==dc)

  {

  printf("%d",j);

  }

  else

  {

  /*To print spaces*/

                  printf(" ");

  }

}

ic++;

dc--;

/*for next row*/

        printf("\n");

}

}



Above program shows the following output:


C program to print hollow square number pattern with diagonals




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