In this tutorial you will learn about the C Program to find the Number of Elements in an Array and its application with practical example.
C Program to find the Number of Elements in an Array
In this tutorial, we will learn to create a C program that will find the Number of Elements in an Array using C programming.
Prerequisites
Before starting with this tutorial, we assume that you are the best aware of the following C programming topics:
- Operators in C Programming.
- Basic Input and Output function in C Programming.
- Basic C programming.
- For loop in C programming.
- Arithmetic operations in C Programming.
Algorithm:-
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STEP 1: START STEP 2: INITIALIZE arr[] = {1, 2, 3, 4, 5} STEP 3: length= sizeof(arr)/sizeof(arr[0]) STEP 4: PRINT "Number of elements present in given array:" by assigning length. STEP 5: RETURN 0. STEP 6: END PROGRAM |
What is An array?
The array is a collection of similar data types. An array can store multiple values with different indexes in memory by using a single variable. The array can be both single as well as multidimensional.
Program to find the Number of Elements in an Array.
In this program, we will first take the input array size and the elements from the user. Then we will find the number of elements in the array using a predefined function. After that, we will store the number of elements in that array into a variable. At last, we will print the number of elements in that array.
With the help of this program, we can find the Number of Elements in an Array
Program Code:-
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/* C Program to find the Number of Elements in an Array */ #include <stdio.h> int main() { //declaring the required variables for the program int arr[] = {1, 2, 3, 4, 5}; //arr[] = it will store the array in the program. //Number of elements present in an array can be calculated as follows using a pre-defined functions called sizeof() int length = sizeof(arr)/sizeof(arr[0]); //Printing the output number of elements in that array printf("Number of elements present in given array: %d", length); return 0; } |
Output:-
In the above program, we have first initialized the required variable.
- arr[] = it will hold the integer value of the array and its elements.
Finding the size of that array.
Program Logic Code.
Printing output of the program.
