Getting Error in C++ code need help

Getting Error need a solution

Error      1      error C2664: 'addfraction' : cannot convert parameter 5 from 'int *' to 'int &'      c:\Users\remote desktop\Documents\Visual Studio 2005\Projects\Calculator\Calculator\Calculator.cpp      79      
Error      2      error C2664: 'subtractfraction' : cannot convert parameter 5 from 'int *' to 'int &'      c:\Users\remote desktop\Documents\Visual Studio 2005\Projects\Calculator\Calculator\Calculator.cpp      82      
Error      3      error C2664: 'multiplyfraction' : cannot convert parameter 5 from 'int *' to 'int &'      c:\Users\remote desktop\Documents\Visual Studio 2005\Projects\Calculator\Calculator\Calculator.cpp      85      
Error      4      error C2664: 'dividefraction' : cannot convert parameter 5 from 'int *' to 'int &'      c:\Users\remote desktop\Documents\Visual Studio 2005\Projects\Calculator\Calculator\Calculator.cpp      88      

#include <iostream>
#include <string>

using namespace std;
void addfraction(int num1, int num2, int den1, int dent2, int& result_num, int& result_den);
void subtractfraction(int num1, int num2, int den1, int dent2, int& result_num, int& result_den);
void multiplyfraction(int num1, int num2, int den1, int dent2, int& result_num, int& result_den);
void dividefraction(int num1, int num2, int den1, int dent2, int& result_num, int& result_den);

int num1,num2,dent1,dent2,numfrac,denfrac;
int* result_num, result_den;
char operators;
bool choice;

void menu()
{
	cout<<"This Program performs operations on fraction. Enter"<<endl;
	cout<<"1:To add fraction"<<endl;
	cout<<"2:To subtract fraction"<<endl;
	cout<<"3:To multiply fraction"<<endl;
	cout<<"4:To divide fraction"<<endl;
	cout<<"9:To exit the program"<<endl;
}

void addfraction(int num1, int num2, int den1, int dent2, int& result_num, int& result_den)
{
	result_num = num1 *  dent2 +  num2 * dent1;
	result_den = dent1 * dent2;
}
void subtractfraction(int num1, int num2, int den1, int dent2, int& result_num, int& result_den)
{
	result_num = num1 *  dent2 -  num2 * dent1;
	result_den = dent1 * dent2;
}
void multiplyfraction(int num1, int num2, int den1, int dent2, int& result_num, int& result_den)
{
	result_num = num1 * num2;
	result_den = dent1 * dent2;
}
void dividefraction(int num1, int num2, int den1, int dent2, int& result_num, int& result_den)
{
	if (num1 == 0 || num2 == 0)
	{
		cout<<"sorry you cant divide by zero"<<endl;
		result_num = 0;
		result_den = 0;
	}
	else
	{
		result_num = num1 / dent1;
		result_den = num2 / dent2;

	}


}

int main()
{
while(true)
{
	cout<<"Please Enter a Number one: "<<endl;
	cin>>num1;
	cout<<"Please Enter a Number two: "<<endl;
	cin>>num2;
	cout<<"Please Enter denomenator one: "<<endl;
	cin>>dent1;
	cout<<"Please Enter denomenator two: "<<endl;
	cin>>dent2;
	
	menu();//desplay menu
	cout<<"Please Enter a Operator: "<<endl;
	cin>>operators;
	while (operators != '9')
	{
		switch(operators)
		{
		case '1':
			addfraction(num1, num2, dent1, dent2,  result_num,  result_den);
			break;
		case '2':
			subtractfraction(num1, num2, dent1, dent2,  result_num,  result_den);
			break;
		case '3':
			multiplyfraction(num1, num2, dent1, dent2,  result_num,  result_den);
			break;
		case '4':
			dividefraction(num1, num2, dent1, dent2,  result_num,  result_den);
			break;
		default:
			break;

		}
	}
}
		return 0;
}

Select allOpen in new window