Write a program in c plus plus language to input student information and display and search of student with search key as reg number?

Answer 1

Here's a simple C++ program that allows you to input student information, display it, and search for a student by their registration number:

#include <iostream>
#include <vector>
#include <string>

struct Student {
    std::string name;
    int regNumber;
};

int main() {
    std::vector<Student> students;
    int n;

    std::cout << "Enter number of students: ";
    std::cin >> n;
    for (int i = 0; i < n; ++i) {
        Student s;
        std::cout << "Enter name and registration number: ";
        std::cin >> s.name >> s.regNumber;
        students.push_back(s);
    }

    int searchReg;
    std::cout << "Enter registration number to search: ";
    std::cin >> searchReg;
    for (const auto& student : students) {
        if (student.regNumber == searchReg) {
            std::cout << "Student found: " << student.name << std::endl;
            return 0;
        }
    }
    std::cout << "Student not found." << std::endl;
    return 0;
}

This program defines a Student structure, collects student data, and allows searching for a student by their registration number.