A fast definition

[Imadatobanisa]

I usually write :
if(a >= min && a <= max)//Just a general case
An another similar & popular case :
if(a != 1 && a != 2 && a != 3...)
Now I can solve this problem by making a new definition :
#define InRange(num,min,max)(num >= min && num <= max)
The code now is :
if(InRange(a,min,max))//For all cases (float, double, int,...)

Some useful & instant definition :

#define HalfRange(num,min,max)(num > min && num < max)
#define min(x,y) ((x) < (y)) ? (x) : (y)
#define max(x,y) ((x) > (y)) ? (x) : (y) 

What do you think?

[kbw]

As you seem to be using Visual Studio, I'd recomend not using the names min and max. There are macros with those names.

[Imadatobanisa]

What do you think about this function:

inline bool Text_CheckChar(char chrInp,const char *strAllow){
while(strAllow){if(chrInp == (*strAllow))return true;strAllow++;}return false;}

[toum]

Your function has one problem : if strAllow is not NULL and chrInp is not found, the loop never ends.

If you're using C strings, that can be corrected by modifying the loop condition :
while(strAllow && *strAllow)