[Solved] Is sizeof a keyword in Java [closed]
sizeof is an operator (and keyword) in C#. It’s not in Java. solved Is sizeof a keyword in Java [closed]
sizeof
[Solved] confusing sizeof operator result
if I count correctly, part 1 is 9 byte long right ? No, you are counting incorrectly. 0x0200000001 can fit into five bytes. One byte is represented by two hex digits. Hence, the bytes are 02 00 00 00 01. 1 solved confusing sizeof operator result
[Solved] sizeof dynamic array is not correct [duplicate]
You don’t have an array; you have a pointer. The size of the pointer is measured in bytes, not bits. sizeof is evaluated at compile time and is constant for any given expression or type. It does not depend on the number of “filled” elements in an array (or pointer to some space that holds … Read more
[Solved] Dynamic Memory allocation to string, gives out incorrect size [duplicate]
sizeof is giving you the size of char pointer which is 4 on your platform. 0 solved Dynamic Memory allocation to string, gives out incorrect size [duplicate]
[Solved] Need an explanation on a shift syntax in code – C++ [closed]
The bitwise shift operators are the right-shift operator (>>), which moves the bits of shift_expression to the right, and the left-shift operator (<<), which moves the bits of shift_expression to the left. There are also two complex operators that can be used to assign the value directly to the value on left. These are the … Read more
[Solved] Why isn’t the size of my array 4 bytes in C
Ok, I’ll take this one question at a time… Why isn’t the result of sizeof(foo) 4? It’s because you’ve only set the size of the foo array to 3 in the first statement char foo[3]. There would be no reason to expect 4 as a result when you’ve explicitly defined the bound as 3 chars … Read more
[Solved] How sizeof(std::cout) is 140 whereas sizeof(std::string) is only 4? [closed]
Basically it comes down to the fact that an iostream has quite a bit of state to store, but a string has very little. Nonetheless, the idea of a string having a size of only 4 is a little surprising (at least to me). I’d normally expect something like 12 for a 32-bit implementation, or … Read more
[Solved] sizeof(bool) g++ vs vc++ [duplicate]
There are versions of g++ (and versions of Visual C++ as well for that matter) for which on some platforms sizeof(bool) is not equal to 1. So no, you can’t assume that it will be the same on g++ and Visual C++. You can’t even assume that it’s the same on different versions of the … Read more
[Solved] What type should be used to loop through an array? [duplicate]
Hmm, interesting case. You want to be able to loop with, let’s just call it hypothetically the largest possible number, and thus wrap-around rather than ever having the comparison return false. Something like this might do the trick: char arr[SIZE_MAX]; size_t i = 0; do { /* whatever you wanna do here */ ++i; } … Read more
[Solved] why using sizeof in malloc?
sizeof doesn’t return the size of the memory block that was allocated (C does NOT have a standard way to get that information); it returns the size of the operand based on the operand’s type. Since your pointer is of type struct A*, the sizeof operand is of type struct A, so sizeof always returns … Read more