C Foundation

What is C? C Compiler Installation C Extensions C Compiler C Interpreter C Program Structure

C Basics

C Keywords C Data Types C Identifiers C Variables C Constant C Escape Sequences C Constant and Volatile C Typecast

Operators

What is Operator C Comma Operator C Arithmetic Operators C Relational Operators C Logical Operators C Bitwise Operators C Conditional Operators C : : Operator C Operator Priority

Basic IO's

Basic IO's C Formatted Functions C Unformatted Functions C Common Functions

Control Statements

What is Control Statement C if Statement C if else Statement C Nested if Statement C Else if Statement C Break Statement C Continue Statement C Switch Statement C Goto Statement

Looping

What is Control Loop C for Loop C Nested for Loop C while Loop C Nested while Loop C do while Loop C Nested do while loop

Functions

What is Function C User Defined Functions C Recursion C Passing Parameters

Scope

Scope C Local Scope C Global Scope

Storage Classes

What is Storage Class C Auto C Extern C Static C Register

Array

What is Array C One Dimensional Array C Two Dimensional Array C Multi Dimensional Array C Arrays Of Strings

String

What is String C String Functions

Pointer

What is Pointer C Pointers Arithmetic C Pointer to Pointer C Pointers and Arrays C Pointers and Strings C Pointer to Functions Void Pointers Null Pointers C Null and Void Pointer

Structure

What is Structure C Struct within Struct C Array within Structure C Pointer to Structure C Structure and Function C Enum C Bitfield Structure C Type def

Union

What is Union

Files

What is File C read a file C write a file C File Handling C Error Handling C Low Level Disk I/O C Other file functions

Memory Allocation

What is Memory Allocation C Malloc() C Calloc() C Free() C Realloc() C Coreleft()

C Reference

All ASCII Code Basic C Questions

C Interview

C Interview Sets All Star Patterns All Number Patterns All Alphabet Patterns All Series Patterns
The ones who are crazy enough to think they can change the world are the ones who do.
- Steve Jobs

C Number Patterns

Why Number Pattern

In most of the MNC interview questions such as in Zoho interview questions, IVTL Infoview interview questions, Amazon interview questions, Google interview questions, Infosys interview questions and even in Voonik interview questions, we come across number pattern questions with a probability of 1:5. We provide you a most commonly asked number pattern question for your interview preparation using C programming.

Lets code a C program to print following number patterns to have some fun

Number Pattern - 1

12345
1234
123
12
1

Number Pattern - 2

12345
2345
345
45
5

Number Pattern - 3

54321
4321
321
21
1

Number Pattern - 4

54321
5432
543
54
5

Number Pattern - 5

1
12
123
1234
12345

Number Pattern - 6

5
45
345
2345
12345

Number Pattern - 7

5
54
543
5432
54321

Number Pattern - 8

    5
   54
  543
 5432
54321

Number Pattern - 9

    5
   45
  345
 2345
12345

Number Pattern - 10

    1
   12
  123
 1234
12345

Number Pattern - 11

    1
   21
  321
 4321
54321

Number Pattern - 13

1
22
333
4444
55555

Number Pattern - 14

1
21
321
4321
54321

Number Pattern - 15

5
44
333
2222
11111

Number Pattern - 16

55555
4444
333
22
1	

Number Pattern - 17

11111
2222
333
44
5

Number Pattern - 18

1
01
101
0101
10101

Number Pattern - 19

1
23
456
78910

Number Pattern - 20

1
10
101
1010
10101

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