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Is there any way to determine the size of a C++ array programmatically? And if not, why? - Stack Ove
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日期:2024-09-03
Actually, if you allocated the array on the stack the sizeof operator would return 1024 -- which is 256 (the # of elements) * 4 (the size of an individual element). (sizeof(arr)/sizeof(arr[0])) would give the result 256. – Kevin Oct 13 '08 at 16:03...
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日期:2024-09-10
7.2 One Dimensional Array: Declaration Dimension refers to the array size that is how big the array is. A single dimensional array declaration has the following form: array_element_data_type array_name[array_size]; Here, array_element_data_type declares t...
Size Specifier: How to display a C/C++ pointer as an array in the Visual Studio debugger - Habib Hey
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日期:2024-09-08
Viewing a C/C++ array in the Visual Studio debugger is easy. You can expand the array in the Watch window (or any other variables window) and see its values. For example, let’s say you have the following C++ code: int _tmain(int argc, _TCHAR* argv[]) { in...
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日期:2024-09-03
Declare “a function with argument of int* which returns pointer to an array of 4 integer pointers”. At the first glance it may look complex, we can declare the required function with a series of decomposed statements. 1. We need, a function with argument ...
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日期:2024-09-03
Is there a way to find out the size of the array that ptr is pointing to (instead ... the
size in the first int, and return ptr+1 as the pointer to the array....
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日期:2024-09-06
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 ......
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日期:2024-09-04
I am writing a simple function that returns the largest integer in an ... There's no
way to do that. This is one good reason (among many) to use ......
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日期:2024-09-08
Simple. Use std::vector Or std::array (where N is a compile-time
constant). If you know the size of your array at compile time, and it doens't ......