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Module DEMO-32-60DEMO-C-32

Grid of 1s and 0s

DEMO-C-32 • Programming in C

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Problem Statement

Write a program that reads an integer N and prints an N x N grid where the columns alternate between 1 and 0.

Constraints

1 <= N <= 20

Input Format

A single integer N (1 <= N <= 20).

Output Format

An N x N grid of alternating 1s and 0s.

Sample Testcases

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Sample #1
Public sample
Input
3
Output
1 0 1
1 0 1
1 0 1
Explanation
Input: 3
Sample #2
Public sample
Input
5
Output
1 0 1 0 1
1 0 1 0 1
1 0 1 0 1
1 0 1 0 1
1 0 1 0 1
Explanation
Input: 5
Sample #3
Public sample
Input
1
Output
1
Explanation
Input: 1
Sample #4
Public sample
Input
7
Output
1 0 1 0 1 0 1
1 0 1 0 1 0 1
1 0 1 0 1 0 1
1 0 1 0 1 0 1
1 0 1 0 1 0 1
1 0 1 0 1 0 1
1 0 1 0 1 0 1
Explanation
Input: 7

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