1. ## Problem with function

Question regarding the response issue. I am having the user input 1 in order to calculate for meters/centimeters and 2 for inches and feet. It has to be an if/else statement, but whenever I run it, it continues onto the next calculation without selecting a choice. Any suggestions would be appreciated
Code:
```#include <iostream>

using namespace std;

void get_input ( double inches, double feet );

void give_output( double centimeters, double meters );

int main ()
{
double inches, feet, meters, centimeters;
char response = '1' || '2';

cout << "We are going to convert inches and feet into meters." << endl;
cout << "Please input the measurement output you would like.";
cout << "(1 for meter and centimeter   output, 2 for inches and feet output)";
cin >> response;
cout << endl;

if ( response = 1 ) {

void get_input ( double inches, double feet );
{

cout << "Please input the feet measurement: ";
cin >> feet;
cout << endl;
cout << "Please input the inches measurement: ";
cin >> inches;
cout << endl;
}

feet = inches * 12;
meters = feet * 0.3048;
centimeters = meters * 100;
inches = feet / 12;

void give_output( double centimeters, double meters );
{
cout << " There are ";
cout << meters;
cout << " meters from the given measurements." << endl;
cout << " There are ";
cout << centimeters;
cout << " centimeters from the given measurements." << endl;
}
}
else ( response = 2 ); {

void get_input ( double meters, double centimeters );
{
cout << "Please input the meters measurement: ";
cin >> meters;
cout << endl;
cout << "Please input the centimeters measurement: ";
cin >> centimeters;
cout << endl;
}

void give_output( double feet, double inches );
{
cout << " There are ";
cout << feet;
cout << " feet from the given measurements." << endl;
cout << " There are ";
cout << inches;
cout << " inches from the given measurements." << endl;
}
}
}```

2. Code:
``` char response = '1' || '2';
//what do you think this does?```
Code:
``` if ( response = 1 ) {
//this is the assignment operator. You need if(response ==1)```
Additionally, since you define response as a char (not sure why you would do that) that evaluation is always false. You really need to sit down and re-read your textbook. You are missing some serious knowledge here.

3. I am thinking you need to read some basic tutorials on if statements and functions.

4. Code:
`#include <iostream>using namespace std;void get_input ( double &inches, double &feet );void give_output( double centimeters, double meters );int main (){    double inches, feet, meters, centimeters;    char response = '1' || '2' ;    char answer = 'y';    cout << "We are going to convert inches and feet into meters." << endl;    cout << "Please input the measurement output you would like." << endl;    cout << "(1 for meter and centimeter output, 2 for inches and feet output): ";    cin >> response;    cout << endl;    if ( response == '1' ) {        get_input ( inches, feet );    feet = inches * 12;    meters = feet * 0.3048;    centimeters = meters * 100;        give_output ( centimeters, meters );        cout << " Would you like to re-use this program ( Y - yes, N - no ): ";        cin >> answer;    }    else if ( response == '2' ) {    void get_input ( double meters, double centimeters );        {        cout << "Please input the meters measurement: ";        cin >> meters;        cout << endl;        cout << "Please input the centimeters measurement: ";        cin >> centimeters;        cout << endl;        }    inches = feet * 12;    feet = meters * 39.37;    meters = centimeters / 100;        void give_output( double inches, double feet );        {        cout << " There are ";        cout << feet;        cout << " feet from the given measurements." << endl;        cout << " There are ";        cout << inches;        cout << " inches from the given measurements." << endl;        }        cout << " Would you like to re-use this program ( Y - yes, N - no ): ";        cin >> answer;    }}void get_input ( double &inches, double &feet ){        cout << "Please input the feet measurement: ";        cin >> feet;        cout << endl;        cout << "Please input the inches measurement: ";        cin >> inches;        cout << endl;}void give_output( double centimeters, double meters ){        cout << " There are ";        cout << meters;        cout << " meters from the given measurements." << endl;        cout << " There are ";        cout << centimeters;        cout << " centimeters from the given measurements." << endl;}`
Is this on the right track?

5. Yes, you are on the right track. Lines 8 and 9 only need to declare the variable; specifically line 8 doesn't really do anything useful. Your program doesn't actually loop; take a look at Lesson 3:Loops. Additionally, you still haven't wrapped your head around functions yet - do not define them in main. Read Lesson 4:Functions.