C++ AddressBook::vectorSize方法代码示例

//.........这里部分代码省略.........
        //x is left "
        //y is right "
        //token will count token # 1-11 for each field.
        int x=0, y=0, token=0;
        while(token<11)//The algorithm should keep looking for tokens until counter hits 11 tokens
        {
            //x starts looking for the first " from y (0 initially at the start of the string/loop)
            x=currentline.find_first_of("\"", y);
            //y will start looking for the next " starting from x+1
            y=currentline.find_first_of("\"",x+1);

            //This if check is not really needed but to be save, x" will always be less than y"
            if(x<y)
            {
                token++;
            }
            substring=currentline.substr(x+1,(y-x)-1);
            //substring is the token which will always be found at x+1 to y-1
            //to get the length, starting from x+1, it is (y-x)-1...(there are also other ways to calculate)
            bookOne.buildData(i,substring,token);
            //After token is extracted to substring, it is pushed to the address book with it's respective
            //token index counter "token"

            //This was the tricky part...took me a while to figure it out =P
            //y needs to get +1 to prevent x from finding y's " in the next loop. DUHHH!!
            //Also this can be done with a third variable to look for commas but this is more efficient/easier.
            y++;

        }

    }//for loop ends here bringing the extraction process to an end.

    //This loop will validate the newly built vector of contacts. (Start at 1 as 0 is the title line)
    for(int i=1; i<bookOne.vectorSize()-1; i++) //vectorsize returns the size the vector Contact data.
    {
        if(bookOne.contactValidate(i)==0)//this boolean function validates and DELETES invalid contacts.
        {
            bookOne.contactValidate(i);//calling the actual function DELETES invalid contacts (more detail in header file)
            i=1; //Thus bringing i back to 1 is needed to check for all invalid contacts in the new vector size.
        }
    }



/////////////////////
//MAIN OPTION BLOCK//
/////////////////////
 string option;
 //option is the variable for the menu option input from the user
 do{ //this do loop will run wile the option is not Q or q for quit.
    do{ //this do loop will run until a valid option is received from the user.
        displayMenu();
        cout << "Select an option:";
        cin >> option;
        //if the option is longer than 1 character. (can probably leave out >1 as function checks for length also)
        if(checkOption(option)==false || option.length()>1)
        {
            cout << "Invalid choice please try again.." << endl; //output invalid choice statement.
        }
    }while(checkOption(option)==false);

    //Program will get here only if option is valid.
    //Options are listed in order shown on project 3 description

        //////////////////////////////
        //OPTION [A] - Add a contact//