#include <iostream>
using namespace std;

struct Student{
    int id;
    string name;
};

int main(){
    Student a,b,c;
    
    a.id = 10;
    a.name = "Anas";
    
    b.id = 20;
    b.name = "Mohammad";
    
    c.id = 30;
    c.name = "Ali";
}

Without Struct 😑

#include <iostream>
using namespace std;

int main(){
    int id_Student_a;
    string name_Student_a;

    int id_Student_b;
    string name_Student_b;

    int id_Student_c;
    string name_Student_c;

    //--------------------
    id_Student_a = 10;
    name_Student_a = "Anas";

    id_Student_b = 20;
    name_Student_b = "Mohammad";

    id_Student_c = 30;
    name_Student_c = "Ali";
}