c-puzzle

30 posts

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 ...read more

Misc

c-puzzle

cpp-puzzle

C Language

C++

C/C++ Puzzles

C program to print characters without using format specifiers

Last Updated: 29 October 2017

As we know that there are various format specifiers in C like %d, %f, %c etc, to help us print characters or other data types. We normally u ...read more

c-puzzle

C Language

How to print a number 100 times without using loop and recursion in C?

Last Updated: 02 March 2023

It is possible to solve this problem using loop or a recursion method but what if both are not allowed? A simple solution is to write the nu ...read more

Misc

c-puzzle

C Language

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C program to print a string without any quote (single or double) in the program

Last Updated: 31 January 2022

Print a string without using quotes anywhere in the program using C or C++.Note : should not read input from the console.The idea is to use ...read more

c-puzzle

C Language

C-Macro & Preprocessor

C/C++ Puzzles

Write a C program to print "GfG" repeatedly without using loop, recursion and any control structure?

Last Updated: 11 October 2018

As we all know the concept of printing the given string repeatedly using various loops(for loop,while loop),recursion and some control struc ...read more

c-puzzle

C Language

C Program to find direction of growth of stack

Last Updated: 14 May 2017

Prerequisite : Memory Layout of C ProgramsIn a typical process, a stack segment of program contains local variables along with information t ...read more

c-puzzle

C Language

system-programming

Print "Hello World" in C/C++ without using any header file

Last Updated: 13 September 2023

Write a C/C++ program that prints Hello World without including any header file.Conceptually it's seems impractical to write a C/C++ program ...read more

Last Updated: 21 June 2018

What code to write in place of "// your code" so that the below code prints 20.[sourcecode language="C"]#include stdio.hint f();int main(){ ...read more

c-puzzle

C Language

Branch prediction macros in GCC

Last Updated: 28 May 2017

One of the most used optimization techniques in the Linux kernel is " __builtin_expect". When working with conditional code (if-else stateme ...read more

C-Macro & Preprocessor

For Versus While

Last Updated: 17 June 2022

Question: Is there any example for which the following two loops will not work the same way? [tabby title="C"][sourcecode language="c"]/*Pro ...read more

c-puzzle

C Language

C-Loops & Control Statements

Write a C macro PRINT(x) which prints x

Last Updated: 13 May 2022

At the first look, it seems that writing a C macro which prints its argument is child's play. Following program should work i.e. it should p ...read more

C Macro

c-puzzle

C Language

C-Macro & Preprocessor

How will you show memory representation of C variables?

Last Updated: 18 February 2022

Write a C program to show memory representation of C variables like int, float, pointer, etc.Algorithm:Get the address and size of the varia ...read more

c-puzzle

C Language

Change/add only one character and print '*' exactly 20 times

Last Updated: 02 March 2023

In the below code, change/add only one character and print '*' exactly 20 times.int main(){ int i, n = 20; for (i = 0; i n; i--) ...read more

c-puzzle

C Language

C++

Condition To Print "HelloWorld"

Last Updated: 16 July 2022

What should be the "condition" so that the following code snippet prints both HelloWorld! if "condition" printf ("Hello"); ...read more

c-puzzle

C Language

C++

Write a C program to print "Geeks for Geeks" without using a semicolon

Last Updated: 11 September 2023

First of all we have to understand how printf() function works. Prototype of printf() function is:int printf( const char *format , ...)Param ...read more

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