Converting froma char* to a const char*
Hello all,
Can I safely cast from a char* to a const char* like this:
const char * destPtr = reinterpret_cast<const char *>(srcPtr);
Is this safe or is there some C++ gotcha that I need to be aware of.
Many thanks,
Luca
Can I safely cast from a char* to a const char* like this:
const char * destPtr = reinterpret_cast<const char *>(srcPtr);
Is this safe or is there some C++ gotcha that I need to be aware of.
Many thanks,
Luca
for this reinterpret_cast is not required. a simple c-style cast will do.
const char * destPtr = (const char *)srcPtr;
infact you dont need any casting. converting char to const char doesnt require any cast. had it been opposite then you need a simple cast.. i.e. from const char* to char*.
const char * destPtr = (const char *)srcPtr;
infact you dont need any casting. converting char to const char doesnt require any cast. had it been opposite then you need a simple cast.. i.e. from const char* to char*.
You don't need to cast at all in this instance as it's completely safe.
If is not safe to use a const pointer as a non-const pointer, and so you must override the compiler to allow this use.
Whenever you use a cast, you are overriding the compilers type system. In C++ you should never do this lightly. C++ has four cast methods that force you to think about the cast you're doing. If you use C style casts, you're even subverting that.
If is not safe to use a const pointer as a non-const pointer, and so you must override the compiler to allow this use.
Whenever you use a cast, you are overriding the compilers type system. In C++ you should never do this lightly. C++ has four cast methods that force you to think about the cast you're doing. If you use C style casts, you're even subverting that.
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