Webb15 feb. 2024 · This C program prompts the user to enter the size of the integer array i.e. how many elements he wants to store, and create the memory dynamically for the array. Program calculates the size of the array by multiplying the size entered by user (number of integer elements) with size of 1 integer. Webb1 dec. 2015 · I have encountered with interesting situation when initializing dynamic size variables. For example: // getInput() is some magic method to retrieve input with …
How to get size c++ dynamic array - Stack Overflow
Webb1 dec. 2011 · Arrays created using the [] syntax are not dynamic, the length is set at compile-time and cannot change.. UPDATE: Actually, C99 adds so-called "variable-length arrays", which can get their length at run-time.After they've been initialized, however, they can't shrink or expand so the below still applies. However, an array is trivially expressed … WebbThe size of the array must be known at compile time. Otherwise you should allocate memory dynamically using: char *chararray = malloc (sizeof (char)*x); where x (an integer) can be set in the application code (you could load it from eeprom if you wanted it be a persistent but configurable setting). landworth
Using an array without the last element is simple in Python, `array ...
A sizeof expression is evaluated during compilation time. It gives you the size of the type of the operand. In the case of a dynamic array, it gives you the size of a pointer, which is typically 4 or 8 bytes (depending on the underlying platform). – goodvibration Dec 12, 2024 at 22:14 Add a comment 2 Answers Sorted by: 4 Webb2 feb. 2016 · I am trying to create a dynamic array of size 32, and then read intergers from some file, and store them in the array. When the array gets filled up, then double its size (create another of twice the size, copy elements to it from old array and free old array) till the input file is exhausted. Here is the code: Webb7 apr. 2024 · #include int main () { int array [] = {1, 2, 3, 4, 5}; int array_size = sizeof (array) / sizeof (array [0]); // calculate the size of the array int new_array_size = array_size - 1; // calculate the size of the new array without the last element int new_array [new_array_size]; // create a new array with the size of the new array // copy elements … landworthiness