Structure Sorting

Medium Structures

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Problem Statement

Write a C++ program that reads an array of N `Student` structures and sorts them in descending order based on their marks using `std::sort`.

Input Format

Number of students N, followed by N records (Roll, Name, Marks).

Output Format

Print sorted student names and marks row by row.

Constraints

1 <= N <= 50

Sample Input

3
101 John 85.5
102 Alice 96.0
103 Bob 90.0

Sample Output

Alice: 96.00
Bob: 90.00
John: 85.50

Explanation

Demonstrates custom comparator lambdas with `std::sort` for structure fields.

Starter Code

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <iomanip>

struct Student {
    int roll;
    std::string name;
    float marks;
};

int main() {
    int n;
    if (std::cin >> n) {
        std::vector<Student> students(n);
        for (int i = 0; i < n; i++) {
            std::cin >> students[i].roll >> students[i].name >> students[i].marks;
        }
        // Write your code here to sort and print students
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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