A little help? C++

[JimTheGreat]

::WARNING:: LOTS OF WRITING BELOW.
@~FALLEN~ @giniyat101 @Skrillex @tryhacker @BACKD00R @CFhackerfree @BarleyCandy @pceumel @Exsilium @Lebaa @skiddy2

I finally gathered my thoughts and told my dad that I wanted to learn some C++. He said there are many types of "programming", like java, science, and etc. But, he just explained to me in detail today that will get me started on C++, and make me kind of realize things.
My dad gave me a project for me to start. I need to make a simple program, he doesn't care about looks, that if I type in a degree (temperature), and when I click a button, it will convert to fahrenheit.
My dad's at work and will NOT be coming back until tomorrow afternoon, so I will ask.

1. What is the difference between "sub" and "function"?

2. What is the difference between "Sub Process" and "SubRoutine"?

3. What exactly IS iostream? Like #include <iostream>?

4. What is #include <iosys.h> and what does that do?

5. If I type "#include <math.h>, would the program be able to do ANY type of math? Like roots, sin cos tan, anything?

6. For variable inputs, is this right or wrong?

int = ONLY POSITIVE numerics. (fahrenheit)
float= BOTH negative AND positive. (degree)
float degree=0; (im trying to make float value (degree) nothing. Meaning, no value for degree is set as of now.)
int farenheit=0; (im trying to make float value (degree) nothing. Meaning, no value for degree is set as of now.)

7. What does "int main ()" do if the first statement in question 6 is right?

[[MPGH]Hero]

Since I'm learning C++ as well, all I know is <iostream> is known as a header. It is used for input and output. The i in <iostream> means input, while the o means output.

#include Tells your program the header you are using.

So if you do #include <iostream> - You're basically telling your program that you are using the input and output stream in your program.

[JimTheGreat]

Since I'm learning C++ as well, all I know is <iostream> is known as a header. It is used for input and output. The i in <iostream> means input, while the o means output.

#include Tells your program the header you are using.

So if you do #include <iostream> - You're basically telling your program that you are using the input and output stream in your program.

oh okay so I NEED the #include <iostream> command for my project right? Because for input I'm using degree, and output for fahrenheit?

[giniyat101]

okay this is the wrong section and iam pretty sure

1- both sub and function keywords are not defined in c++ they are probably from vb
sub doesnt return a value (aka void) while function does

2- i dont know really, maybe u tell me where u got this 2 words?

3- iostream is a header files contains some functions (and subs before you say it ) which deals with the console input and output like cout and cin etc

4- never heared about it sorry but its another header file ofc

5- yes you may access alot of math functions there like square root , power , trigonometric functions etc

6- int : signed 4 bytes integer, can be positive or negative

7- float: singned 4 bytes number, can have decimal points, can be positive or negative

8-int main():

defines the first controlable code by the programmer, but your program routine here

example (conversation between fahrenheit and celsius):

#include <iostream> //so we can use the console functions cout and cin
using namespace std; //now u dont need to use std::cout or std::cin

int main()
{
    float tempf, tempc; //variables to keep the temperatures.. i picked float because temperaturs can be negative, and can have decimal points ofc
    cout << "enter fahrenheit temperature"; //output the message you see
    cin >> tempf; //get fahrenheit from user input
    //not sure about the converting i have almost forgot everything about last year's physics xD
    tempc = (tempf-32)/1.8; //calculate celsius value
    cout << "the temperature in celsius equals " << tempc << endl; //output the result and ends the line
    return 0;//return to windows
}

you may put in your compiler and press ctrl+f5 yourself

[JimTheGreat]

okay this is the wrong section and iam pretty sure

1- both sub and function keywords are not defined in c++ they are probably from vb
sub doesnt return a value (aka void) while function does

2- i dont know really, maybe u tell me where u got this 2 words?

3- iostream is a header files contains some functions (and subs before you say it ) which deals with the console input and output like cout and cin etc

4- never heared about it sorry but its another header file ofc

5- yes you may access alot of math functions there like square root , power , trigonometric functions etc

6- int : signed 4 bytes integer, can be positive or negative

7- float: singned 4 bytes number, can have decimal points, can be positive or negative

8-int main():

defines the first controlable code by the programmer, but your program routine here

example (conversation between fahrenheit and celsius):

#include <iostream> //so we can use the console functions cout and cin
using namespace std; //now u dont need to use std::cout or std::cin

int main()
{
    float tempf, tempc; //variables to keep the temperatures.. i picked float because temperaturs can be negative, and can have decimal points ofc
    cout << "enter fahrenheit temperature"; //output the message you see
    cin >> tempf; //get fahrenheit from user input
    //not sure about the converting i have almost forgot everything about last year's physics xD
    tempc = (tempf-32)/1.8; //calculate celsius value
    cout << "the temperature in celsius equals " << tempc << endl; //output the result and ends the line
    return 0;//return to windows
}

you may put in your compiler and press ctrl+f5 yourself

hmm...my dad wrote out to me a completely different coding.

[giniyat101]

hmm...my dad wrote out to me a completely different coding.

whatever, thats an easy example nothing else..

[JimTheGreat]

whatever, thats an easy example nothing else..

Alright I'll try this in my coding, and I'll open another thread if really needed.
/req close @Hero, as of now.
Thanks @giniyat101

[[MPGH]Hero]

Closed Upon Request.