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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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Student Structure Program in C

Student Structure Program in C

✅ Student Details using Structure in C

#include <stdio.h>

struct student {
    char name[20];
    int roll;
    float marks;
};

int main() {
    struct student s;

    printf("=== ENTER STUDENT DETAILS ===\n");
    printf("Enter the name of the student:\n");
    scanf(" %[^\n]", s.name);  // Accepts spaces

    printf("Roll Number of the student:\n");
    scanf("%d", &s.roll);

    printf("Enter marks of the student:\n");
    scanf("%f", &s.marks);

    printf("\n=== STUDENT DETAILS ===\n");
    printf("Name: %s\n", s.name);
    printf("Roll Number: %d\n", s.roll);
    printf("Marks: %.2f\n", s.marks);

    return 0;
}

📘 Explanation:

This C program uses a structure to store and print details of a student. The structure contains three members: name (string), roll (integer), and marks (float). The program takes input using scanf, including a method to accept strings with spaces, and then displays the data using printf. This example introduces basic use of structures, string input handling, and formatted output.

🧾 Sample Output:

=== ENTER STUDENT DETAILS ===
Enter the name of the student:
John Doe
Roll Number of the student:
101
Enter marks of the student:
87.5

=== STUDENT DETAILS ===
Name: John Doe
Roll Number: 101
Marks: 87.50

🔑 Keywords:

Structure in C, student data structure, scanf with spaces, display student info, C program using struct, formatted output, beginner C example

📌 Hashtags:

#CProgramming #StructuresInC #StudentDetails #BeginnerC #PrintfScanf #CProjects #LearnC

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