C Programming Puzzles and Tricky Questions

C program to print hello world without using semicolon.
C program to round of floating point number to nearest integer.
C program to find execution time of a program in seconds
C program to print numbers from 1 to N without using semicolon
C program to implement your own itoa function
C program to count digits of a number using logarithms
C program to check if a given number is a power of 2 in single statement
C program to print a 2D matrix row wise without using curly braces
C program to convert any number to string in one line
How to create your own header file in C
C program to multiply a number with 7 using bitwise operator
C program to reverse the digits of a number in just three statements
C program to swap two variable using XOR bitwise operator
C program to sum the digits of a number in single statement
C program to check whether a number is in a range [min, max].
C program to print a long variable using putchar function only
C Program to count trailing zeros of a number using bitwise operator
C program to check whether a number is odd or even without using if else statement
How to take a multiline paragraph as input from user.
C program to print memory representation of a C variables
C program to implement your own sizeof operator
C program to read a password string from user
C program to print digits of a number in words without using if-else and switch case
C Program to print numbers from 1 to N without using loops
C program to return multiple values from a function