conditional jump or move depends on uninitialised value(s)

[aeo3]

I am using valgrind leak memory to check my program this message appears a lot of time, the program works but why this message.
example code

double RandNum,pp;  
    double axis=AXIS;
    double wise_profit=0.20;
    double mu, delta,a,b;
    double sattisfic_price;
  RandNum=Rand.getRandomFloat();
 
    if(prod_size<=prod_sold && prod_sold>0) SetPrice(GetPrice()+axis*RandNum); 
    else if(prod_size>prod_sold && prod_sold>0)
    {
        mu=wise_profit*interestrate*satisfic_wage*numworkers;
        delta=prod_size*prod_size*(1-mu/(interestrate*satisfic_wage*numworkers));
        a=(-prod_size*prod_size)/(4*interestrate*satisfic_wage*numworkers);
        b=prod_size;
        sattisfic_price=(-b-sqrt(delta))/(2*a); <<-------- Here is the error
        SetPrice(sattisfic_price);
    }  
 
 

[aTsFQe3]

The problem cannot be deduced from the given sample code. It is likely that the reported error indicates your given problem - that is, you are calling a subroutine or have placed a call to a subroutine (etc.) based on a variable of which the value you have not set.

In computing, an uninitialized variable is a variable that is declared but is not set to a definite known value before it is used. It will have some value, but not a predictable one. As such it is a programming error and a common source of bugs in software.