asked on

error message

good morning,
i'm getting an error message and I was wondering if anyone knew what this means.

error C2297: '*' : illegal, right operand has type 'float (__cdecl *)(float)'

here is the line it says the error is on:

return input * totalDeduction;

here is the complete function :
float totalDeduction(float input)
{
double deduction = 0.425;
return input * totalDeduction;
} //end of calcDeductions function

nationnon

ASKER

: warning C4305: 'initializing' : truncation from 'const double' to 'float'

is the warning message when I change double deduction into float deduction.

but i'm not so worried about that.

ASKER CERTIFIED SOLUTION

KangaRoo

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nationnon

ASKER

Adjusted points from 10 to 15

nationnon

ASKER

now it's a warning message stating that
: warning C4244: 'return' : conversion from 'double' to 'float', possible loss of data

the line it's on is
return input * deduction;

KangaRoo

That's correct, the function returns a float. It calculates with doubles however, because deduction is declared as a double. two solutions:

float totalDeduction(float input)
{
float deduction = 0.425;
return input * deduction;
}

// Or:

double totalDeduction(double input)
{
double deduction = 0.425;
return input * deduction;
}

nationnon

ASKER

Adjusted points from 15 to 25

nationnon

ASKER

I have one last warning and it is warning C4700: local variable 'deduction' used without having been initialized

If i'm not mistaken the variable has been initialized. Do I have to go add (float) deduction 0.0; after the normal float deduction; , will that fix it? and what will it do if it does fix it?

KangaRoo

Huh? how can that be???
Can you paste the code, or which of the above did you use?

nationnon

ASKER

the double totalDeduction(double input)
{
double deduction = 0.425;
return input * deduction;
}

got rid of one warning.

but there are two warnings
: warning C4700: local variable 'deduction' used without having been initialized

warning C4700: local variable 'grossIncome' used without having been initialized

KangaRoo

In the totalDeduction function 'deduction' is initialized in the very first line. I haven't seen 'grossIncome' before. Check the line numbers the compiler gives with the warnings, I suspect they refer to another function.

nationnon

ASKER

Adjusted points from 25 to 35

nationnon

ASKER

I figured it out. I had to define the variables which was very simple. totalDeductions = .45;