GeeksforGeeks

Execute both if and else statements in C/C++ simultaneously

Last Updated: 13 September 2023

Write a C/C++ program that executes both if-else block statements simultaneously.Syntax of if-else statement in C/C++ language is:if (Boolean expression){ // Statement ...read more

Implementing ternary operator without any conditional statement

Last Updated: 16 June 2022

How to implement ternary operator in C++ without using conditional statements.In the following condition: a ? b: cIf a is true, b will be executed.Otherwise, c will be exe...read more

Print "Hello World" with empty or blank main in C++

Last Updated: 14 June 2022

Write a program in C++ that prints "Hello World", it has a main function and body of main function is empty.Following are three different solutions.We can create a global ...read more

Misc

C++

cpp-puzzle

Using return value of cin to take unknown number of inputs in C++

Last Updated: 23 June 2022

Consider a problem where we need to take an unknown number of integer inputs.A typical solution is to run a loop and stop when a user enters a particular value. How to do ...read more

C/C++ Tricky Programs

Last Updated: 14 March 2024

We may come across various tricky programs in our day-to-day life. Maybe in technical interviews, coding tests, or C/C++ classrooms.Here is a list of such programs:-Print ...read more

C++

c-puzzle

cpp-puzzle

Programming puzzle (Assign value without any control statement)

Last Updated: 20 July 2022

Given four integers 'a', 'b', 'y' and 'x', where 'x' can only be either zero or one. Your task is as follows:If 'x' is zero assign value 'a' to the variable 'y'If 'x' is o...read more

Aptitude

cpp-puzzle

programming-puzzle

Maximum of four numbers without using conditional or bitwise operator

Last Updated: 31 October 2023

Given four numbers, print the maximum of the 4 entered numbers without using conditional or bitwise operator (not even ternary operators). Examples: Input : 4 8 6 5Outpu...read more

Competitive Programming

cpp-puzzle

programming-puzzle

Print a number 100 times without using loop, recursion and macro expansion in C?

Last Updated: 21 June 2022

It is possible to solve this problem using loop or a recursion method. And we have already seen the solution using #define directive (Macro expansion) but what if all thre...read more

C++

c-puzzle

cpp-puzzle

Print 1 to 100 without loop using Goto and Recursive-main

Last Updated: 06 April 2023

Our task is to print all numbers from 1 to 100 without using a loop. There are many ways to print numbers from 1 to 100 without using a loop. Two of them are the goto stat...read more

Print system time in C++ (3 different ways)

Last Updated: 10 December 2018

First MethodPrinting current date and time using time()Second MethodCPP // CPP program to print current date and time// using time and ctime.#include stdio.h#in...read more

Measure execution time of a function in C++

Last Updated: 11 January 2025

We can find out the time taken by different parts of a program by using the std::chrono library introduced in C++ 11. We have discussed at How to measure time taken by a p...read more

C++

CPP-Library

cpp-puzzle

Calculate range of data types using C++

Last Updated: 12 January 2018

C++ program for printing the range data type like int, char, short.Signed Data TypesMETHOD1.) calculate total number of bits by multiplying sizeof with 8 (say n)2.) Calcul...read more

Why "using namespace std" is considered bad practice

Last Updated: 29 March 2024

The statement using namespace std is generally considered bad practice. The alternative to this statement is to specify the namespace to which the identifier belongs using...read more

Print a character n times without using loop, recursion or goto in C++

Last Updated: 05 December 2022

Given a character c and a number n, print the character c, n times. We are not allowed to use loop, recursion, and goto. Examples :Input : n = 10, c = 'a'Output : aaaaaaaa...read more

Increment a number without using ++ or +

Last Updated: 17 April 2023

The task is to Increment a number without using ++ and + operators.Examples:Input : 3Output : 4Input : 9Output : 10The idea is based on the fact that the negative numbers ...read more