WebJul 18, 2016 · If the number of elements matters, it's best to use an array. By the way, this code: int result = sizeof(b)/sizeof(*b); is wrong and won't compile; b is not a pointer so *b is not a legal expression. You meant: const int result = sizeof b / sizeof b.b0; Also, as a side note, avoid using C++ keywords in C code, it can be somewhat confusing. WebNov 5, 2010 · You can then find out the number of elements in the array by dividing by the size of one element in the array: sizeof myArray [0] So, you get something like: size_t LengthOfArray = sizeof myArray / sizeof myArray [0]; Since sizeof yields a size_t, the result LengthOfArray will also be of this type. Share Improve this answer
C# byte [] array to struct with variable length array
WebIn which case you need to examine each element in turn. These are usually nested 1-dimensional arrays, but there is not reason you couldn't have, say, a 2d array containing 3d arrays containing 5d arrays. In any case, with a jagged/sparse structure, you need to use the length properties on each cell. WebGet the Size of an Array To get the size of an array, you can use the sizeof () operator: Example int myNumbers [5] = {10, 20, 30, 40, 50}; cout << sizeof (myNumbers); Result: 20 Try it Yourself » Why did the result show 20 instead of 5, when the array contains 5 elements? It is because the sizeof () operator returns the size of a type in bytes. hodgins drug store moscow idaho
How to get the length of row/column of multidimensional array …
WebAug 21, 2024 · struct C { // sizeof (double) = 8 double z; // sizeof (short int) = 2 short int y; // Padding of 2 bytes // sizeof (int) = 4 int x; }; printf("Size of struct: %ld", sizeof(struct C)); return 0; } Output: Size of struct: 16 In this case, y (short int) is followed by x (int) and hence padding is required after y. WebJul 27, 2024 · In line 14, we have declared an array of structures of type struct student whose size is controlled by symbolic constant MAX. If you want to increase/decrease the size of the array just change the value of … WebDec 26, 2024 · C doesn't have a default way to know the size of array like you want, but you can implement it in the same way a string length is passed down. In string the character '\0' gives the strin end, so when you calculate the length the function counts the characters till it meets a '\0' character. html unicode for new line