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INTRODUCTION Print "Hello, World!" Print an integer Add two integers Multiply two floating point numbers Find ASCII value of a character Compute quotient and remainder Find the size of int, float, double and char Demonstrate the working of keyword long Swap two numbers DECISION AND LOOP Check whether a number is even or odd Check whether a character is vowel or consonant Find the largest number among three numbers Find all roots of a quadratic equation Check leap year Check whether a number is positive or negative Check whether a character is an alphabet or not Calculate the sum of natural numbers Find factorial of a number Generate multiplication table Display Fibonacci sequence Find GCD of two numbers Find LCM of two numbers     Display characters from A to Z    using loop     Count number of digits in an integer     Reverse a number     Calculate the power of a number     Check whether a number is palindrome or not     Check whether a number is prime or not     Display prime numbers between two intervals     Check Armstrong number     Display Armstrong number between two intervals     Display factors of a number Make a simple calculator      using switch...case      FUNCTIONS ARRAY AND POINTER Display prime numbers between intervals using function Check prime or Armstrong number using user-defined function Check whether a number can be expressed as sum of two prime numbers Find the sum of natural numbers using recursion Find factorial of a number using recursion Find G.C.D Using recursion Convert binary number to decimal and vice-versa Convert octal number to decimal and vice-versa Convert binary number to octal and vice-versa Reverse a sentence using recursion Calculate the power using recursion   Calculate average using arrays  Find largest element of an array  Calculate standard deviation  Add two matrix using multi-    dimensional arrays  Multiply to matrix using multi-  dimensional arrays  Find transpose of a matrix  Multiply two matrices by passing matrix to a          function  Access elements of an array using pointer  Swap numbers in cyclic order using call by reference Find largest number using dynamic memory allocation STRINGS STRUCTURE AND UNION Find the frequency of characters in a string Count the number of vowels, consonants and so on Remove all characters in a string except alphabet Find the length of a string Concatenate two strings Copy string without using strcpy() Sort elements in lexicographical Order Store information (name, roll and marks) of a student using structure Add two distances (in inch-feet) system using structures Add two complex numbers by passing structure to a function Calculate difference between two time periods Store information of students using structure Store information using structures with dynamically memory allocation FILES I/O Write a sentence to a file Read a line from a file and display it Display its own source code as output