Error: cannot convert 'double' to 'double(double, double, double)' in assignment

Question

I know my work is sloppy, this is my 4th assignment in this class. Any help would be appreciated, thank you.

double  getPrincipal(0);
double  getRate(0);
double  getYears(0);
double  computeAmount(double getPrincipal, double getRate, double getYears);
double  displayAmount(double principal, double rate, double years, double amount);

cout << "what is the principal ammount?" << endl;
cin >> getPrincipal;

cout << "What is the percentage rate?" << endl;
cin >> getRate;

cout << "Over how many years will the money stay in the bank?" << endl;
cin >> getYears;  

computeAmount = pow((1 + getRate / 100),getYears); // This is where i got the error

Answer 1

You are messing up functions with variables by trying to assign a value to a function.

double  computeAmount(double getPrincipal, double getRate, double getYears);

By this line, you declare computeAmount() to be a function who takes 3 doubles as its parameters and return a double.

But, in this line,

computeAmount = pow((1 + getRate / 100),getYears);

You're trying to use it as a variable.

Depends on what your purpose is, you may want to change one of these two lines. For example, you can delete the first line, and change the second line to:

double computeAmount = pow((1 + getRate / 100),getYears);