"I love you" program

so i just started programming and am tottaly loveing it
(my first problem was to make a program to conver fahrenheit to kelvin and celcius
if you wan to know here is what i got but thats just if you are curious in how i did it
(yes i did this by myself using all of my noob c++ knowledge)

Code:

#include <iostream>

using namespace std;

int main()
{
    float Celcius,Fahrenheit,Kelvin;
    
    cout << "Enter Fahrenheit degrees to get Kelvin and Celcius";
    cin >> Fahrenheit;
    cin.get();
    
    Celcius=(Fahrenheit-32)/1.8;
         if (Celcius <-273.15) cout << "This temperature is impossible" << endl;
         else
    cout << "Celcius is" << Celcius;
    cout << "" << endl ;// This makes the program eaiser to read
    Kelvin=(Celcius+273.15);
         if (Kelvin<0) cout << "This is below absolute zero" << endl;
         else
    cout << "Kelvin is" << Kelvin << endl;
    cin.get();

    return 0;
}

but (that was my homework and im done with it) but now i want to write another program
(just for fun)
so here is what i want to do
write a program that ask the user if he/she loves the computer
ex
cout << "Hello whats your name?";
either (cin >> name; ) or (getline (cin, name; )
but i can't us e
if or else if or any of those
becouse i want to cout different answers for different cin's
any ideas??
(just for fun nothing else)

heres what I tried and failed in miserably so far

Code:

#include <iostream>
#include <string>
using namespace std;

int main ()
{
  string name,answer; // is this right??
  cout << "Hello, What's your name? ";
  cin >> name;
  cout << "Hello " << name << "do you love me?\n";
  cin >> answer;
      if (answer=yes) // and obciously this didnt work
  cout << "I love you too... Marry ME!\n";
       /*else if (blabla
       cout << bla bla
       else if (blab lblablab*/
       // you can see my reasoning but well this is not ints or floats
       // so i have no idea how to approach this

  return 0;
}

please note im not going for AI just a simple little in and out transaction
something that my friends and i can mess around with( ahhh im falling in love with programing)

I had my doubts about if/else working but a man can hope

= is assignment, == is test for equality.

Also, a string literal needs to be enclosed in double quotes. For example, you output "Hello, What's your name? " correctly because you put it in quotes. But when you test the answer for equality against the string yes, you forgot to put quotes around yes.

A note about your first program. The default floating point type in C++ is double. When you type 1.8, that is a double. You are using float, which is a smaller precision. In general, you should just use double unless you have a reason not to, so I would switch your datatypes from float to double in that code.

Another note is that in C++, it is better practice to declare your variables only when you are ready to use them and can initialize them. For example, the Celsius and Kelvin variables aren't needed until later in the program, so you should declare them there. You should always try to initialize variables when you declare them, so that is another reason to declare them later when you know what you want to initialize them with.

One last piece of advice is to consider revising your indentation habits. Your code is hard to read, I might revise the indentation like this:

Code:

#include <iostream>

using namespace std;

int main()
{
    float Celcius,Fahrenheit,Kelvin;
    
    cout << "Enter Fahrenheit degrees to get Kelvin and Celcius";
    cin >> Fahrenheit;
    cin.get();
    
    Celcius=(Fahrenheit-32)/1.8;
    if (Celcius <-273.15)
        cout << "This temperature is impossible" << endl;
    else
        cout << "Celcius is" << Celcius;
    cout << "" << endl ;// This makes the program eaiser to read

    Kelvin=(Celcius+273.15);
    if (Kelvin<0)
        cout << "This is below absolute zero" << endl;
    else
        cout << "Kelvin is" << Kelvin << endl;

    cin.get();
    return 0;
}

hey thanks for the indention advice ya guess i should get in a good clean habit early.
no need for double just a simple program for school(nothing fancy)
all that it needed to do was calculate fahrenehit to celcius and kelvin
as for decalring variables until later i undersand that if this was a big long program

but since its simple i put them right there simply becouse they can be seen along with the rest of the program easily.

double is the default floating type??? well guess ill start using that now in that instance

so i tried including == and "yes" but right after it asks "do you love me" and i try and enter in yes or no it closes withough doing anything else??
thanks for all the advice too really thanks i appreciate it.

so i tried including == and "yes" but right after it asks "do you love me" and i try and enter in yes or no it closes withough doing anything else??

Look at your temperature code. You wrote (or copied from your teacher) these two lines:

Code:

cin >> Fahrenheit;
cin.get();

What is the cin.get() for? When you enter the temperature, the number and the newline from the enter are placed in the buffer. The cin >> Fahrenheit removes the number, but the newline is left in the buffer. cin.get() removes this newline so it does not affect subsequent input. A more descriptive alternative would be to use cin.ignore(), which in this context would do the same thing. Of course, a possibly even better solution is to run the code from the command line, thus sidestepping the issue altogether.

The FAQ has some treatment on this topic: How do I stop my Windows Console from disappearing everytime I run my program?