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Merge Sort in C++

  Merge Sort in C++ Introduction Merge Sort is a popular sorting algorithm that follows the Divide and Conquer approach. It divides an array into smaller subarrays, recursively sorts those subarrays, and finally merges the sorted subarrays to produce a completely sorted array. In this tutorial, we will learn how to implement Merge Sort in C++ . The program divides the array into two halves using the mid index, recursively sorts both halves, and then combines them using the merge() function. Merge Sort has a time complexity of O(n log n) in the best, average, and worst cases. Table of Contents Algorithm C++ Program Input Sample Output Output Explanation Dry Run Flow of Execution Time Complexity Space Complexity Applications Key Points Interview Questions Frequently Asked Questions Keywords Conclusion Algorithm Start the program. Read the size of the array. Read the array elements from the user. Call the mer...
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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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