Write a C/C++ program without using the main function
Write a C/C++ program without using the main() function. We are allowed to change the entry point of the program from main() to any other function or remove the main() function altogether.
Tag: Easy
Determine if two integers are equal without using comparison and arithmetic operators
This post will discuss how to determine whether two integers are equal without using comparison operators (==, !=, <, >, <=, >=) and arithmetic operators (+, -, *, /, %).
Set both elements of a binary array to 0 in a single line
Given a binary array of size two having at least one element as zero, write a single line function to set both its elements to zero. Use of ternary operator and direct assignment of elements are not allowed.
Check if a number is even or odd without using any conditional statement
Given a number, determine if it is even or odd without using any conditional statement (if–else) or ternary operator.
Find the square of a number without using the multiplication and division operator
Given an integer, find its square without using multiplication and division operator. Also, the use of the power function from any programming language library is not allowed.
Multiply two numbers without using a multiplication operator or loops
Given two integers, multiply them without using the multiplication operator or conditional loops.
Print a semicolon without using a semicolon anywhere in the program
Write a program to print a semicolon without using a semicolon anywhere in the program.
Print all numbers between 1 to N without using any loop | 4 methods
Write a program to print all numbers between 1 and N without using a loop.
Determine the if condition to print the specific output
What should be the if condition in the following code snippet so that output would be “Hello World”.
Swap two numbers without using a third variable | 5 methods
Given two integers, swap them without using any third variable.
Implement power function without using multiplication and division operators
Given two positive integers, implement the power function without using multiplication and division operators.
Add two numbers without using the addition operator | 5 methods
Given two numbers, add them without using an addition operator.