Jul 25, 2019 · But you can use pointers, and after user input you can allocate array with the appropriate length. For example: int* array; int length; printf("Enter length of the array: "); scanf("%d", &length); // maybe you need to add checking, like if length > 0 array = malloc(sizeof(int) * length); // now you have array with `length` elements and 0 ...

Mar 31, 2014 · I am trying to write a program that can create an array with size based on the user input and then store structs inside. The struct will contain two ints and two floats. My main problem is, how do I create an array with size based on the user input?

The function takes an array of integer array and an integer array_size, which is the length of the array. Return the sum of the first and last elements of the array. For example, if array = [10, 20, 30, 40, 50] and array_size = 5 , the expected output is 60 .

Mar 18, 2025 · Write a program in C to find the second smallest element in an array. Test Data : Input the size of array : 5 Input 5 elements in the array (value must be <9999) : element - 0 : 0 element - 1 : 9 element - 2 : 4 element - 3 : 6 element - 4 : 5 Expected Output: The Second smallest element in the array is : 4 Click me to see the solution. 18. 2D ...

Jan 24, 2025 · When we declare an array in C, the compiler allocates the memory block of the specified size to the array name. Syntax of Array Declaration data_type array_name [size]; or data_type array_name [size1] [size2]...[sizeN]; where N is the number of dimensions. The C arrays are static in nature, i.e., they are allocated memory at the compile time.

Note: When working with strings in scanf(), you must specify the size of the string/array (we used a very high number, 30 in our example, but atleast then we are certain it will store enough characters for the first name), and you don't have to use the reference operator (&).

Aug 18, 2024 · Program to create an array from user input in C using dynamic memory allocation with malloc function.This program will create an integer array by allocating memory of size entered by an user using malloc function and also elements of the array will be input by user.

Mar 28, 2017 · If we cannot take user input for size of an array then how come the following program is running fine? for(i = 0; i < size; i++) scanf("%d", &A[i]); if(A[0] > A[1]) key = 0; else if(A[size-1] < A[size-2]) key = size-1; else{ for(i = 1; i <= size-2; i++) if((A[i] > …

Nov 20, 2024 · In this article, we will learn how to find the size of an array in C. The simplest method to find the size of an array in C is by using sizeof operator. First determine the total size of the array in bytes and divide it by the size of one element to get the number of elements.

How can I determine the size of the array to be the total characters entered by the user even though the initial size is 80? Is there a different approach to this that I am missing? Here is my code.