Function, Pointer & Structure

#include <stdio.h>
#include <string.h>

struct Person {
    char name[20];
    int id;
    float money;
};

void personInfo(struct Person employee) {
    printf("Name: %s\n", employee.name);
    printf("ID: %d\n", employee.id);
    printf("Money: %lf\n", employee.money);
    printf("\n");
}

int main() {
    struct Person employee[3], student[4];

    strcpy(employee[0].name, "Ashik");
    employee[0].id = 1;
    employee[0].money = 450.50;

    strcpy(employee[1].name, "XYZ");
    employee[1].id = 2;
    employee[1].money = 560.08;

    strcpy(employee[2].name, "ABC");
    employee[2].id = 3;
    employee[2].money = 430.44;


    strcpy(student[0].name, "S1");
    student[0].id = 1;
    student[0].money = 450.50;

    strcpy(student[1].name, "S2");
    student[1].id = 2;
    student[1].money = 560.08;

    strcpy(student[2].name, "S3");
    student[2].id = 3;
    student[2].money = 430.44;

    strcpy(student[3].name, "S4");
    student[3].id = 4;
    student[3].money = 430.44;

    printf("Employee Type:\n");
    for (int i = 0; i < 3; i++) {
        personInfo(employee[i]);
    }

    printf("Student Type:\n");
    for (int i = 0; i < 4; i++) {
        personInfo(student[i]);
    }
}

// void swap(int *p, int *q) {      // Call by Reference
//  int temp = *p;
//  *p = *q;
//  *q = temp;
// }

// void swap(int p, int q) {        // Call by value
//  int temp = p;
//  p = q;
//  q = temp;
//  printf("Inside Function: %d %d\n", p, q);
// }

// int main() {
//  int a, b;
//  scanf("%d %d", &a, &b);

//  printf("Before change: %d %d\n", a, b);
    // swap(&a, &b);         // Call by Reference

//  printf("After change: %d %d\n", a, b);
// }

// int main() {
//  int a, b;
//  scanf("%d %d", &a, &b);
//  int *p;
//  p = &a;
//  printf("Before Change: %d\n", *p);

//  p = &b;
//  printf("After Change: %d\n", *p);
// }

// int func(int x) {
//  if(x % 2 == 0) {
//      return 1;
//  } else {
//      return 0;
//  }
// }


// int main() {
//  int n;      // Local variable
//  scanf("%d", &n);

//  int ans = func(n);

//  if(ans) {
//      printf("Even\n");
//  } else {
//      printf("Odd\n");
//  }
// }