Skip to main content

Featured

C Program to Solve Two Sum Using Brute Force (With Algorithm & Output)

 Introduction The Two Sum problem is a popular coding interview question where we must find two indices of an array whose values add up to a given target. This program demonstrates a simple brute-force solution in C using nested loops and dynamic memory allocation. Problem Statement Given an integer array and a target value, return the indices of the two numbers such that they add up to the target. Each input has exactly one solution, and the same element cannot be used twice. The result should return the indices, not the values. If no solution exists, return NULL.  Algorithm / Logic Explanation Start the program. Traverse the array using a loop from index 0 to numsSize - 1 . Inside this loop, use another loop starting from i + 1 to numsSize - 1 . For every pair (i, j) , check if nums[i] + nums[j] == target . If condition becomes true: Allocate memory for 2 integers using malloc() . Store indices i and j . Set returnSize = 2 . Return the result poi...
Post a Comment
Read more
Labels

C Program for Referencing and Dereferencing (Pointers)

C Program for Referencing and Dereferencing (Pointers)

✅ C Program for Referencing and Dereferencing (Pointers)

#include<stdio.h>
int main()
{
    int x = 10;
    int *ptr = &x;   // Referencing = storing the address of variable 'x' into pointer 'ptr'.

    printf("%d", *ptr);  // Dereferencing = fetching the value stored at that address (here 10).
}

📘 Explanation:

Pointers in C are used to store the address of variables. - Referencing (&): The & operator is used to get the address of a variable. - Dereferencing (*): The * operator is used to fetch the value stored at that address.

In this program:

  • int *ptr = &x; → stores the address of x into pointer ptr.
  • *ptr → retrieves the value stored at that address (10).

🧾 Sample Output:

10

🔑 Keywords:

C pointers, referencing in C, dereferencing in C, pointer basics, beginner C programs, C interview questions on pointers

📌 Hashtags:

#CProgramming #Pointers #Referencing #Dereferencing #InterviewPrep

🔍 Search Description:

Simple C program to demonstrate referencing (&) and dereferencing (*) using pointers. Explains storing an address and accessing value with sample output.

Labels:

Comments

Post a Comment

Popular Posts

🌙