Print Z pattern in C

In this article, we will discuss the C program to print the Z pattern in C. Given a number, such as 1, 2, 3, print the alphabetic Z Pattern as shown below:

Example:

Input = 6

1 2 3 4 5 6 
          5
        4
     3
  2
1 2 3 4 5 6 

Input = 7

1 2 3 4 5 6 7 
           6
        5
      4
    3
  2
1 2 3 4 5 6 7 

Algorithm

Print the first row of numbers from 1 to Num.
After that, from the second to the (Num-1)th row, print 2 * (Num- in- 1) blank spaces followed by the concluding element, in- 1.
Display the last row with numbers ranging from 1 to Num.

Program to print z pattern:

// implementation of Z pattern
#include <stdio.h>
// Programme to print the required 
// Alphabetic Z Pattern
void alphabetZpattern(int Num)
{
	int in, side_indexs, sizes;

	// Identifying the values for Right, 
	// Left, as well as Diagonal
	int Tops = 1, down = 1, Diag = Num - 1;
	// Loop for printing the first row
	for (in = 0; in < Num; in++)
		printf("%d ", Tops++);
	printf("\n");
	// loop iterating over the indexes
	for (in= 1; in< Num - 1; in++) {
		// loop iteration
		for (side_indexs = 0; side_indexs < 2 * (Num - in - 1);
			side_indexs++)
			printf(" ");
		// displaying the diagonal values
		printf("%d", Diag--);
		printf("\n");
	}
	// loop iterating over the last row
	for (in= 0; in < Num; in++)
		printf("%d ", down++);
}

// Driver Code
int main()
{
	// initialize the n with size 
	int N = 6;
	alphabetZpattern(N);
	return 0;
}

Output:

1 2 3 4 5 6 
         5
      4
    3
  2
1 2 3 4 5 6

Explanation:

In this program, the alphabetic Z pattern is printed with this function. It accepts one input Num, the size of the Z pattern to be produced.
Variables:
This variable acts like a loop counter during multiple loops.
side_indexes: This variable specifies the number of spaces to be printed on either side of the diagonal.
sizes: These are not used in the program.
Tops: This variable represents the values displayed in the Z pattern's top row.
down: It indicates what values will be printed in the Z pattern's bottom row.
Diag: The diagonal values are represented by this variable.
It displays the first row of integers ranging from 1 to Num(in this example, 1 to 6).
After that, the diagonal element of the Z pattern is printed, with gaps on both sides and decreasing numerals from Num-1 to 1.
Finally, it displays the bottom row containing numbers ranging from 1 to Num.