plz healp abby

#include <iostream>
#include <stdio.h>

struct pair{
int tvalue1 = 6;
int tvalue2 = 8;
} x;

void swap_value(int a, int b)
{
 int temp = a;
 a = b;
 b = temp;
}
 void swap_reference(int &a, int &b)
 {
  int temp = a;
  a = b;
  b = temp;
 }
 void swap_pointer(int *a, int *b)
 {
  int temp = *a;
  *a = *b;
  *b = temp;
 }

 void swap_value(pair p)
 {
  int temp = x.tvalue1;
  x.tvalue1 = x.tvalue2;
  x.tvalue2 = temp;
 }
 void swap_reference(pair &p)
 {
  int temp = x.tvalue1;
  x.tvalue1 = x.tvalue2;
  x.tvalue2 = temp;
 }
 // void swap_pointer(pair *p)
 // {
 //  int temp = x.tvalue1;
 //  x.tvalue1 = x.tvalue2;
 //  x.tvalue2 = temp;
 // }



int main()
{
int testvalue1 = 5;
int testvalue2 = 7;
int &testreference1 = testvalue1;
int &testreference2 = testvalue2;
int *testpointer1 = &testreference1;
int *testpointer2 = &testreference2;


swap_value(testvalue1,testvalue2);
std::cout << "Test Value 1: " << testvalue1 << " Test Value 2: "<< testvalue2 << std::endl;
// Does not swap
swap_reference(testreference1, testreference2);
std::cout << "Test Value 1: " << testvalue1 << " Test Value 2: "<< testvalue2 << std::endl;
// Does swap
swap_pointer(testpointer1, testpointer2);
std::cout << "Test Value 1: " << testvalue1 << " Test Value 2: "<< testvalue2 << std::endl;
// Does swap
swap_value(x);
std::cout << "Test Value 1: " << x.tvalue1 << " Test Value 2: "<< x.tvalue2 << std::endl;
swap_reference(x);
std::cout << "Test Value 1: " << x.tvalue1 << " Test Value 2: "<< x.tvalue2 << std::endl;
// swap_pointer(*x);
// std::cout << "Test Value 1: " << x.tvalue1 << " Test Value 2: "<< x.tvalue2 << std::endl;


return 0;
}