Changing type name

Applications Programming
1

In C++, how can I change the type with another name

For example

How can I declaring an object real which would be the same as declaring it float

2

Are you referring to typedef ?

typedef float real;

int main(int argc, char **argv)
{
    real val = 10.1;
  
    return 0;
}

--ahamed

3

Yes. I have a lot of programs and classes in various files and I have created

common.h

The contents are

#ifndef Common_hh
#define Common_hh

#include <stdlib.h>

typedef float Real;

#endif

Then I include it with the #include in the files

4

Is your question answered then, or is there more to it?

5

I have defined a function in a class called GetFloat and want to be able to call it using GetReal. Is this possible for class functions?

Using g++ I use the compiler option

-DGetReal=GetFloat

I want now to have it in the actual code

6

If that already works, it's equivalent to #define GetReal GetFloat

It's a global text replacement that only matches whole words, essentially, so would match a bare GetFloat nearly anywhere, including the class you want, and anywhere else you don't want too.

The usual way to change the name of a function in C++ would be to change the name of the function. Or if you really need both names, create an inline wrapper so it has two names.

float getReal(void) { return(value); }
inline float GetFloat(void) { return(GetReal()); }