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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...
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Find Greatest of Three Numbers in C

Find Greatest of Three Numbers in C

✅ Find the Greatest of Three Numbers in C

#include <stdio.h>

int main() {
    int a, b, c;

    // Input
    printf("Enter three numbers:\n");
    scanf("%d %d %d", &a, &b, &c);

    // Logic to find greatest
    if (a >= b && a >= c) {
        printf("The greatest number is: %d\n", a);
    } else if (b >= a && b >= c) {
        printf("The greatest number is: %d\n", b);
    } else {
        printf("The greatest number is: %d\n", c);
    }

    return 0;
}

📘 Explanation:

This C program takes three integers as input and determines the greatest among them using simple conditional statements. It compares the three numbers using nested if-else blocks:

  • First checks if a is greater than or equal to both b and c.
  • If not, then checks if b is greater than or equal to the other two.
  • If both conditions fail, then c is the greatest by default.
This approach ensures correct output even if the numbers are equal.

🧾 Sample Output:

Enter three numbers:
12 45 33
The greatest number is: 45

🔑 Keywords:

Greatest of three numbers, if else in C, compare numbers in C, logic building in C, beginner level C program, C programming basics

📌 Hashtags:

#CProgramming #BeginnerC #MaxOfThree #ComparisonLogic #IfElseC #CodingBasics

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