➤ If-else Statement in C
➤ Programs on if-else
➤ Switch Case in C
➤ Switch case Programs
➤ Conditional Operator
➤ While loop in C
➤ Do-while loop in C
➤ While vs do-while
➤ For loop in C
➤ Break keyword in C
➤ Continue keyword in C
➤ Break vs Exit in C
➤ Goto keyword in C
☕️ Flow Control Programs
➤ Largest in 3 Numbers
➤ Find Grade of student
➤ Find the absolute value
➤ Vowel or Consonant
➤ Leap Year Program
➤ Simple calculator in C
➤ Check Odd or Even
➤ Roots of Quadratic Equation
➤ Find Reverse of Number
➤ Factors of a number in C
➤ Generate Multiplication table
➤ Find Power of a Number
➤ Find GCD and LCM
➤ Find factorial of Number
➤ Count Number of Digits
➤ Sum of digits in Number
➤ Sum of N Natural Numbers
➤ Sum of Squares of Natural No.
➤ Find Sum of Odd Numbers
➤ Find the Sum of Series
➤ Find Fibonacci series in C
➤ Sum of the Fibonacci series
➤ Sum until enters +ve numbers
➤ Sum of max 10 no. & Skip -ve
☕️ C Conversion Programs
➤ Celsius to Fahrenheit
➤ Fahrenheit to Celsius
➤ Decimal ↔ Binary
➤ Decimal ↔ Octal
➤ Octal ↔ Binary in C
☕️ Number Programs in C
➤ Prime Number in C
➤ Strong Number in C
➤ Krishnamurthy Number
➤ Neon Number in C
➤ Palindrome number
➤ Perfect Number in C
➤ Armstrong Number
☕️ Pattern Programs in C
➤ Pattern programs in C
➤ Printing pattern using loops
➤ Floyd’s triangle Program
➤ Pascal Triangle Program
➤ Pyramid Star Pattern in C
➤ Diamond Pattern Programs
➤ Half Diamond pattern in C
➤ Print Diamond Pattern
➤ Hollow Diamond Pattern
➤ Diamond Pattern of Numbers
There are many pattern programs are written by programmers for practice purposes. The diamond pattern programs are one of them. Here we will write a hollow diamond pattern in C.
Hollow Diamond Star Pattern in C
Input: 5
Output:
*
* *
* *
* *
* *
* *
* *
* *
*
C program for the above pattern,
#include<stdio.h>
int main()
{
int n;
printf("Enter number of rows: ");
scanf("%d",&n);
for(int i=1; i<=n; i++)
{
for(int j=i; j<=n; j++)
{
printf(" ");
}
for(int k=1; k<=2*i-1; k++)
{
if(k==1 || k==(2*i-1)) printf("*");
else printf(" ");
}
printf("\n");
}
for(int i=n-1; i>=1; i--)
{
for(int j=n; j>=i; j--)
{
printf(" ");
}
for(int k=1; k<=2*i-1; k++)
{
if(k==1 || k==2*i-1) printf("*");
else printf(" ");
}
printf("\n");
}
return 0;
}
Output:-
Enter number of rows: 7
*
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
* *
*
In this pattern first and the last row contain 1 star and remaining every row contains exactly 2 stars.
We can display any characters instead of stars, for this purpose just replace the * with that character. But in this case, all characters must be the same.
Hollow Diamond Number Pattern
Input: 5
Output:
1
2 2
3 3
4 4
5 5
4 4
3 3
2 2
1
This hollow diamond pattern contains numbers instead of stars. So, only some parts of the code will change and others will remain the same.
The pattern starts with 1 and displays up to 5. The first and last row contains only 1 and the remaining rows contains exactly 2 same numbers. From 1st to 5th row the size of pattern increases and from 6th to 9th row the size of pattern decreased.
#include<stdio.h>
int main()
{
int n, a=1;
printf("Enter number of rows: ");
scanf("%d", &n);
for(int i=1; i<=n; i++)
{
for(int j=i; j<=n; j++)
{
printf(" ");
}
for(int k=1; k<=2*i-1; k++)
{
if(k==1 || k==2*i-1) printf("%d",a);
else printf(" ");
}
a++;
printf("\n");
}
a=n-1;
for(int i=n-1; i>=1; i--)
{
for(int j=n; j>=i; j--)
{
printf(" ");
}
for(int k=1; k<=2*i-1; k++)
{
if(k==1 || k==2*i-1) printf("%d",a);
else printf(" ");
}
a--;
printf("\n");
}
return 0;
}
Output:-
Enter number of rows: 3
1
2 2
3 3
2 2
1
Enter number of rows: 5
1
2 2
3 3
4 4
5 5
4 4
3 3
2 2
1
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