c get pointer size
Given an arbitrary type (I've chosen char here, but that is for sake of concrete example): char *p;. You can use either of these expressions: sizeof(p) sizeof(char *). ,That's not something you can do in C without maintaining the information yourself. You created the arrays, so you knew their sizes at one point, you just have to ...
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 c get pointer size 相關參考資料
c++ how to get the length of a pointer array? - Stack Overflow
You can't, I'm afraid. You need to pass the length of the array to anyone who needs it. Or you can use a std::array or std::vector or similar, which keep track of the ... https://stackoverflow.com Get size of pointer in C - Stack Overflow
Given an arbitrary type (I've chosen char here, but that is for sake of concrete example): char *p;. You can use either of these expressions: sizeof(p) sizeof(char *). https://stackoverflow.com Getting the size of the data of a Pointer - Stack Overflow
That's not something you can do in C without maintaining the information yourself. You created the arrays, so you knew their sizes at one point, you just have to ... https://stackoverflow.com how can i know the allocated memory size of pointer variable in c ...
It is impossible to know how much memory was allocated by just the pointer. doing sizeof (p) will get the size of the pointer variable p which it takes at compile ... https://stackoverflow.com How to find the 'sizeof' (a pointer pointing to an array)? - Stack ...
What C programmers do is store the size of the array somewhere. ..... stated, you cannot get this information from the decayed pointer value of the array alone. https://stackoverflow.com Is the sizeof(some pointer) always equal to four? - Stack Overflow
Even on a plain x86 32 bit platform, you can get a variety of pointer sizes, try this .... Technically speaking, the C standard only guarantees that sizeof(char) == 1, ... https://stackoverflow.com Pointers, sizeof() and address in C++ - Stack Overflow
When you are saying p + 1 , meaning that p + 1 * sizeof(int) . As I've mentioned here, the formula is ???????????????????????????? = ???????????????? + ???????????????????? × ????????????????. Tha... https://stackoverflow.com Size of a pointer in C - Stack Overflow
sizeof(void*) generally yields the size of pointers on your architecture, although ... Here you can get an idea of the situation with something like sizeof(void (*)()) ... https://stackoverflow.com What is the size of a pointer in C? - Quora
https://www.quora.com What is the size of a pointer? - Stack Overflow
Pointers generally have a fixed size, for ex. on a 32-bit executable they're usually ... that absolutely has to have a pointers of a certain size, you'd better check it! https://stackoverflow.com |