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;
        }
    }
}

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.

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

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?

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.