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C Tutorial
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printf scanf
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C program to compare the two strings
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Print "Hello" without ;
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Decimal to Binary
Number in Characters
Alphabet Triangle
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Fibonacci Triangle
Hexadecimal to Binary
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Octal to Hexadecimal in C
Strong number in C
Star Program in C
itoa Function in C
Extra Long Factorials in C
Leap year program in C
Perfect Number Program in C
Variables vs Constants
Round Robin Program in C with Output
C Program to find the roots of quadratic equation
Type Casting vs Type Conversion
How to run a C program in Visual Studio Code
Modulus Operator in C/C++
Sum of first N natural numbers in C
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LCM of two numbers in C
while loop vs do-while loop in C
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Binary to Decimal Number in C
GCD of two numbers in C
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flowchart in C
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C Header Files
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Structure Pointer in C
sprintf() in C
Range of Int in C
C Program to convert 24 Hour time to 12 Hour time
What is double in C
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Calculator Program in C
Calloc in C
user-defined vs library function in C
Memset C
ASCII Table in C
Static function in C
Reverse a String in C
Twin Prime Numbers in C
strchr() function in C
Structure of a C program
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Logical NOT (!) Operator in C
Self-referential structure
Break Vs. Continue in C
For vs. While loop in C
Abort() Function in C
Assert in C
Floor() Function in C
memcmp() in C
Find Day from Day in C without Using Function
Find Median of 1D Array Using Functions in C
Find Reverse of an Array in C Using Functions
Find Occurrence of Substring in C using Function
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Exponential() in C
Float in C
islower() in C
memcpy() in C
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Matrix Calculator in C
Bank Account Management System
Library Management System in C
8th Sep - Calendar Application in C
8th Sep - va_start() in C programming
8th Sep - Ascii vs Unicode
Student Record System in C
Contact Management System in C
Cricket Score Sheet in C
C/C++ Tricky Programs
Clearing the Input Buffer in C/C++
In-place Conversion of Sorted DLL to Balanced BST
Merge Two Balanced Binary Search Trees
Responsive Images in Bootstrap with Examples
Why can't a Priority Queue Wrap around like an Ordinary Queue
Customer Billing System in C
Builtin functions of GCC compiler
Integer Promotions in C
Bit Fields in C
Department Management System in C
Local Labels in C
School Billing System in C
Banking Account System in C using File handling
Data Structures and Algorithms in C - Set 1
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Employee Record System in C
Hangman Game in C
Hospital Management System in C
Number of even and odd numbers in a given range
qsort() in C
Quiz game in C
An Array of Strings in C
Peak element in the Array in C
Move all negative elements to one side of an Array-C
Reverse an Array in C
3 way merge sort in c
Segregate 0s and 1s in an array
Articulation Points and Bridges
Execution of printf with ++ Operators
Understanding the extern Keyword in C
Banker's Algorithm in C
FIFO Page Replacement Algorithm in C
Kruskal's Algorithm in C
FCFS Program in C
Triple DES Algorithm in C
Window Sliding Technique in C
Sleeping Barber Problem Solution in C
How to Add Matrix in C
C Program to Demonstrate fork() and pipe()
Deadlock Prevention using Banker's Algorithm in C
Simple Stopwatch Program in C
Add Node to Linked List in C
How to Add two Array in C
Algorithm in C language
Add Digits of Number in C
Add Element in Array in C
Add String in C
Add Two Matrices in C
Add two numbers using Pointer in C
Order of Complexity in C
Pattern Matching Algorithm in C
Adaline Program in C
Adam Number in C Program
Adam Number or not in C Program
Add 2 Matrix in C
Add 2 Strings in C
Add a Character to a String in C
Best Compiler for C Programming
C Program to Convert Infix to Postfix
C Program For Printing Inverted Pyramid
Control String in C Language
How to Find Time Complexity of a Program in C
Top C Projects in 2023
Convert a Char Array into a Double in C
Conio.h in C
Decision-Making Statements in C
What is Hashing in C
Bubble sort program in C
Comma Operator in C
Control Statements in C
ctype.h in C
First Fit Algorithm in C
Hello World Program in C
Logical operator in c
Memory leak in C
Null character in C
Operator precedence in C
Putchar() function in C
Quick Sort in C
realloc in C
Special operator in C
Volatile Keyword in C
CRC program in C
Binary search algorithm in C
Kruskal algorithm in C
Transpose of Matrix in C
Actual and Formal Parameters in C
Bit Stuffing in C
Difference between C and Embedded C
Dynamic Array in C
Jump statement in C
Multidimensional array in C
Priority scheduling program in C
Pseudo code in C
Data Structure in C
Difference between switch statement and if-else-if ladder statement in C
MCQ
Math
Prime Numbers List
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Ounces in a Cup
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C Interview
C #ifdefThe #ifdef preprocessor directive checks if macro is defined by #define. If yes, it executes the code otherwise #else code is executed, if present. Syntax: Syntax with #else: C #ifdef exampleLet's see a simple example to use #ifdef preprocessor directive. Output: Value of a: 2 But, if you don't define NOINPUT, it will ask user to enter a number. Output: Enter a:5 Value of a: 5
Next TopicC #ifndef
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