Determining outputs

[beccak0316]

Please explain to me how to solve:
Line 4: In main: num1 = _______, num2 = _______, and t = _______

Line 11: In funOne: a = _______, x = _______, z = _______, and t = _______

Line 13: In funOne: a = _______, x = _______, z = _______, and t = _______

Line 15: In funOne: a = _______, x = _______, z = _______, and t = _______

Line 17: In funOne: a = _______, x = _______, z = _______, and t = _______

Line 6: In main after funOne: num1 = ______, num2 = ______, and t = _____

Line 19: In funTwo: u = ______, v = ______, aTwo = ______, and t = ______

Line 11: In funOne: a = _______, x = _______, z = _______, and t = _______

Line 13: In funOne: a = _______, x = _______, z = _______, and t = _______

Line 15: In funOne: a = _______, x = _______, z = _______, and t = _______

Line 17: In funOne: a = _______, x = _______, z = _______, and t = _______

Line 21: In funTwo after funOne: u = ______, v = ______, aTwo = ______,

and t = ______

Line 23: In funTwo: u = ______, v = ______, aTwo = ______, and t = ______

Line 25: In funTwo: u = ______, v = ______, aTwo = ______, and t = ______

Line 8: In main after funTwo: num1 = ______, num2 = ______, and t = _____

Here is the code below:

 // Example: Reference and value parameters

#include <iostream> 
using namespace std;

int t;

void funOne (int& a, int& x);
void funTwo (int& u, int v);

int main ( ) 
{
int num1, num2;
 
num1 = 10; 										// Line 1
num2 = 20; 										// Line 2
t = 15; 											// Line 3

cout << “Line 4: In main: num1 = ” << num1 << “, num2 = ” 
	<< num2 << “, and t = ”<< t << endl;				// Line4

funOne (num1, t);									// Line 5
cout << “Line 6: In main after funOne: ”<< “num1 = ” 
	<< num1 << “, num2 = ” << num2 << “, and t = ”<< t 
	<< endl;										// Line6

funTwo (num2, num1);								// Line 7
cout << “Line 8: In main after funTwo: ”<< “num1 = ” 
	<< num1 << “, num2 = ” << num2 << “, and t = ” 
	<< t << endl;									// Line8

system(“pause”);
return 0;											// Line 9
}

 

void funOne (int& a, int& x)
{
int z;

z = a + x;										//Line 10

cout << “Line 11: In funOne: a = ” << a << “, x = ” << x
	<< “, z= ” << z << “, and t = ” << t << endl;		//Line 11

x = x + 5;										//Line 12
cout << “Line 13: In funOne: a = ” << a << “, x = ” << x
	<< “, z= ” << z << “, and t = ” << t << endl;		//Line 13

a = a + 12;										//Line 14
cout << “Line 15: In funOne: a = ” << a << “, x = ” << x
	<< “, z= ” << z << “, and t = ” << t << endl;		//Line 15

t = t + 13;										//Line 16
cout << “Line 17: In funOne: a = ” << a << “, x = ” << x
	<< “, z= ” << z << “, and t = ” << t << endl;		//Line 17
}

void funTwo ( int& u, int v )
{
int aTwo;

aTwo = u;											//Line 18
cout << “Line 19: In funTwo: u = ” << u << “, v = ” << v
	<< “, aTwo = ” << aTwo << “, and t = ” << t << endl;	//Line 19

funOne(aTwo, u);									//Line 20
cout << “Line 21: In funTwo after funOne: ” << “u = ” 
	<< u << “, v = ” << v << “, aTwo = ” << aTwo 
	<< “, and t = ” << t << endl;						//Line 21

u = u + 13;										//Line 22
cout << “Line 23: In funTwo: u = ” << u << “, v = ” << v 
	<< “, aTwo = ” << aTwo << “, and t = ” << t << endl;	//Line 23

t = 2 * t;										//Line 24
cout << “Line 25: In funTwo: u = ” << u << “, v = ” << v 
	<< “, aTwo = ” << aTwo << “, and t = ” << t << endl;	//Line 25
}