Having percentage calculation problem

[Quakerstate98]

I'm trying to build myself a budget program but my calculations for percent arnt working properly.

What i want is lets say u have a 400$ pay check
and u want to find out what 30% of that is and then put it into its own value
how would i go about doing so

[michaelp]

You say your calculations aren't working? What do you mean?
And you would multiply the paycheck by 0.3 to get 30% of it.

[syntax_error]

code:

double paycheck=400; double balance =0; balance =paycheck*0.3; printf ("%.2d"+ balance);

?

[Saad]

syntax_error wrote:

code:

double paycheck=400; double balance =0; balance =paycheck*0.3; printf ("%.2d"+ balance);

?

Why are you using printf, printf is a C function to output items to a screen, you should be using std::cout since this is C++ not C.

Further more the code can be shortened a bit more to

c++:

double paycheck=400; double balance = paycheck * 0.3;

Saad

[syntax_error]

srry it was more of a prosudo code then a full solution

[michaelp]

Those calculations should work, if they don't already.