"if" statements in Visual C++ (Microsoft VC++ 2008)?

I'm trying to self-teach (myself) visual C++, and i'm starting with a simple calculator. i'm trying to ask the user to input how to calculate an answer, but i'm having trouble with the if statements. heres my source code for that part:





cout %26lt;%26lt; "Ok,\n Would you like to Add, Subtract, Multiply or Divide?\n\n";


int type = 0;


int add = ;


int subtract = ;


cin %26gt;%26gt; type;


if ( type == add ) {


cout %26lt;%26lt; TotalPlus;


}


elseif ( type == subtract ) {


cout %26lt;%26lt; TotalMinus


}





I have no idea what to put in the int add and int subtract. any help? I have defined all the intigers and totals exc. above, i didnt include that code for the sake of character space on the question's body paragraph.

"if" statements in Visual C++ (Microsoft VC++ 2008)?
What does the user enter to say they want to add? You didn't tell them what to enter. As a result, there's no way to say what the value of "add" or "subtract" should be.





If you prompt with "Enter 1 to add or 2 to subtract" then you could say add = 1 and subtract = 2.





Otherwise I don't know what to tell you.
Reply:What you want to do is use integers to get a function. You would half to use a enum. Dont do that.





#include %26lt;string%26gt;





void main(){


string function;





cout %26lt;%26lt; "What function?";


cin %26gt;%26gt; function;


if (function == "add")


...


elseif


...


}





YOU CAN ALSO DO THIS


cout %26lt;%26lt; "1 - add, 2 - subtract";


int func = 0;


if (func == 1)


...


elseif (func == 2)





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Reply:dude, i noticed an "elseif" statement in your code. That is not valid, you must be a vb programmer lolz... here's the syntax of an if statement:





if (expression)


{


//do this


}


else if (expression)


{


//do that..


}


else


{


// fallback codes..


}





You can also use the so called ternary operator when your condition is limited to two options, example:





(expression)?(do this if true):(or this if false);





Hope this one helps.