Дан массив записей, содержащий сведения о студентах группы

#include<iostream>
#include<stdlib.h>
#include<string>
using namespace std;
 
struct Student {
    string name;
    int day;
    int month;
    int year;
};
 
void show(Student student) {
    cout << "Name: " << student.name << endl;
    cout << "Birthday: " << student.day << " " << student.month << " " << student.year << endl << endl; 
}
 
int main() {
    const int size = 4;
    Student students[size] = {
        // name day month year
        { "Martin", 12, 12, 1994 },
        { "Greg", 4, 1, 1993 },
        { "Tommy", 2, 2, 1993 },
        { "John", 4, 12, 1993 }
    };
    bool flag = false;
    Student target = students[0];
    for(int i = 0; i < size; i++) {
        if((students[i].year < target.year || (students[i].year == target.year && students[i].month < target.month) || (students[i].year == target.year && students[i].month == target.month && students[i].month < target.month)) && (students[i].month == 12 || students[i].month == 1 || students[i].month == 2)) {
            flag = true;
            target = students[i];
        }
    }
    if(flag) {
        show(target);
    }
    system("pause");
    return 0;
}

if((students[i].year < target.year || (students[i].year == target.year && students[i].month < target.month) || (students[i].year == target.year && students[i].month == target.month && students[i].month < target.month)) && (students[i].month == 12 || students[i].month == 1 || students[i].month == 2))

if((students[i].year < target.year || (students[i].year == target.year && students[i].month < target.month) || (students[i].year == target.year && students[i].month == target.month && students[i].day < target.day)) && (students[i].month == 12 || students[i].month == 1 || students[i].month == 2))