I got the most simple code to display sizeof() of a datatype, say an int. #include <stdio.h> int main() { printf('%i', sizeof(int)); } No matter what I do, such as put sizeof(int) into an integer, or use 'zu' instead of 'i', it hands me this error: error: invalid conversion from ‘int’ to ‘const char*’ Is there something wrong wi...
Is it 12 bytes or 16 bytes when stored in a List<DataPoint>? public struct DataPoint { DateTime time_utc; float value; } Is there any sizeof function in C#? ...
Suppose, int numbers [20]; int * p; I think this is statement is valid p = numbers; But this is not numbers = p; Because numbers is an array, operates as a constant pointer, and we cannot assign values to constants. So if we go by this then we cannot use *numbers while initializing the array? ...
void main() { char c='0'; printf("%d %d",sizeof(c),sizeof('0')); } ...
In the gcc compiler, sizeof(main), sizeof(printf) and sizeof(scanf) all are 1. I want to know how the size of all these are 1. What is the logic behind it? ...
Possible Duplicates: Empty class in C++ What is the size of an empty struct in C? I read somewhere that size of an empty struct in C++ is 1. So I thought of verifying it. Unfortunately I saved it as a C file and used <stdio.h> header and I was surprised to see the output. It was 0. That means struct Empty { }; int main(v...
Hello How can I get the size of a member in a struct in C? struct A { char arr[64]; }; i need something like that: sizeof(A::arr) thanks ...
First of all, on my system the following hold: sizeof(char) == 1 and sizeof(char*) == 4. So simply, when we calculate the total size of the class below: class SampleClass { char c; char* c_ptr; }; we could say that sizeof(SampleClass) = 5. HOWEVER, when we compile the code, we easily see that sizeof(SampleClass) = 8. So the question...
In C, I need to know the size of a struct, which has function pointers in it. Can I be guaranteed that on all platforms and architectures: the size of a void* is the same size as a function pointer? the size of the function pointer does not differ due to its return type? the size of the function pointer does not differ due to its param...
Possible Duplicate: Why is sizeof an operator? Why is sizeof supposed to be an operator in C, & not a function? Its usage seems similar to that of a function call, as in sizeof(int). Is it supposed to be some kind of a pseudo-function? ...
bool fp[81]; From my understanding fp should use ceil(81/8) bytes because it is in succession. Am I correct? How can I prove this? ...
I have to get size of object which type I does not know. It's a template where I want to achieve sth like this: void sth(T data) { System.out.println("Data size = ", sizeof(data)); } How I can do this in Java? sizeof - like a C sizeof ;) ...