Question

Hi there i have a method called

int compare(char op1, char op2)

the method will return 1, -1 or 0 depending on the result of the comparison. (1 if op1 < op2).

I need to compare the following operations:

- subtraction
* multiplication
/ division
^ exponentiation
% remainder

I have considered using an enum such as:

enum ops{
    '+'=1, '-'=1, '*'=2, '/'=2, '^', '%'
}var;

but this doesn’t compile. Can anyone lend a hand?

Answer 1

You can’t use characters as keys for the enum, you should do something like:

enum ops {
    OP_PLUS       = 1,
    OP_MINUS      = 1,
    OP_MULT       = 2,
    OP_DIV        = 2,
    OP_POWER,
    OP_MOD
} var;