OK I am wondering Can you make a variable hold an operator.
Such as say +, -, / etc...
And if so can that variable be used to replace an operator in an equation?
for instance
char a = "+";
int b = (2 a 3);
thoguh that doesn't work itself i think it conveys what i am looking for.
No.
What are you trying to do.
you can use it in a switch statement
int b = 1;
int c = 2;
int d = 0;
switch(a)
{
case '+': d = b * c; break;
case '-': d = b - c; break;
case '/': d = b / c; break;
// etc
}OK I am wondering Can you make a variable hold an operator.
Such as say +, -, / etc...And if so can that variable be used to replace an operator in an equation?
for instance
char a = "+";
int b = (2 a 3);thoguh that doesn't work itself i think it conveys what i am looking for.
You can do this to have the same effect:
#define a +
int b = (2 a 3);But 'a' is not really a variable here.
And I see no reason why you would want to do that...
You can do this to have the same effect:
#define a + int b = (2 a 3);But 'a' is not really a variable here.
And I see no reason why you would want to do that...
You might want to do something like that when writing a calculator. for example, if you enter "2 * 3" then your program needs to figure out what to do.
You might want to do something like that when writing a calculator. for example, if you enter "2 * 3" then your program needs to figure out what to do.
That is pretty much my reasoning is calculations with the equation from an outside source. I did think of using switches/loops/etc... but they are all rather convoluted ways to do something that would be so simple. Man the more i am learning of C++ the more glaring flaws i am seeing.
Are there any compliers with additions that will fix some things, simple things like length_of(Array), treat_as_value(char). So many things that would make the programing both easier and less taxxing on memory and processor time. And if it was compiled to exe it should retain portability or am i missing something?
I don't know if not is there a langauge I should try that doesn't have such drastic oversights?
Are there any compliers with additions that will fix some things, simple things like length_of(Array), treat_as_value(char).
Not in C or C++ languages.
So many things that would make the programing both easier and less taxxing on memory and processor time. And if it was compiled to exe it should retain portability or am i missing something?
C/C++ is probably the least taxing of all computer languages except assembly and machine code. Other languages, such as basic, let you do some things a lot easier but the executable programs are generally larger and slower.
If you want to get reall deep into parsing equations then try YACC (Yet Another Compiler Compiler)
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