C program to print plus star pattern

Write a C program to print plus star pattern series using for loop. How to print plus star pattern series using loop in C program. Logic to print plus star pattern in C programming.

Input N: 5

    +
    +
    +
    +
+++++++++
    +
    +
    +
    +

Required knowledge

Basic C programming, If else, For loop, Nested loop

Logic to print plus star pattern

    +
    +
    +
    +
+++++++++
    +
    +
    +
    +

Take a close look about the pattern and identify some noticeable things about it. Here are some.

1. The pattern consists of N * 2 - 1 rows.
2. When you look to the center horizontal plus line i.e. +++++++++ this line. It also consists of N * 2 - 1 columns.
3. For every other row, single plus symbol is printed after N - 1 blank spaces.

Based on the above observation let us write a C program to print plus star pattern.

Program to print plus star pattern series

/**
 * C program to print the plus star pattern series
 */

#include <stdio.h>

int main()
{
    int i, j, N;

    printf("Enter N: ");
    scanf("%d", &N);

    // Run an outer loop from 1 to N*2-1
    for(i=1; i<=(N * 2 - 1); i++)
    {
        // For the center horizontal plus
        if(i == N)
        {
            for(j=1; j<=(N * 2 - 1); j++)
            {
                printf("+");
            }
        }
        else
        {
            // For spaces before single plus sign
            for(j=1; j<=N-1; j++)
            {
                printf(" ");
            }
            printf("+");
        }

        printf("\n");
    }

    return 0;
}

Enter N: 5
    +
    +
    +
    +
+++++++++
    +
    +
    +
    +

Happy coding 😉