how to code in: c++ 1

//include
#include <iostream>

using namespace std;
//show off functions that aren't main
void function();
//functions
int main(){
//variables
int number;
double numberwithpoint;
bool torf;
char letter;
//arrays of variables
int numberarray[];
double numberwithpointarray[];
bool torfarray[];
char letterarray[];
// testing and loops
//switch statment
switch(avariable){
    case something:

    break;
    default:
    //somthing to do
    }
//if statment
if(something){


    }
    else if(somthingelse){

        }
    else{


        }
//while loop
int i;
while(i < 10){
    cout << "i is less than 10" << endl;
    i++;
    }
//do while
do{

    }while(something);
//for loop
for(int var; var <= 42; var++){
    cout << var << endl;

    }

//in points using goto
loop:
//do something
if(something) goto loop;
//run you other funtion
function();
//return 0 no signal for os to handle after program end.
return 0;
}
//a second function
void function(){
    //functions stuff
    //print some text on the screen using the iostream libary
    cout << "some text" << endl;
    }