C Program to Calculate Sum of Array Elements

Array is a mile stone of C Program which we may use almost everywhere. Here is a basic program to understand array, memory locations and structure of array etc.

What is an array?
An array is a group of continuous memory locations which we can access by the address. An array of a particular datatype can only store values of that data type(often it convert and use the given data).

Array initialization
The syntax of array initialization in C is :

datatype array_name[size];

Algorithm

Here the array named 'array' of type 'int' is used to store different numbers and adding them by separately accessing the array elements using for loop.
//Program


//Program
#include <stdio.h<

voide main()
{
    int n, i;
  
    float num[100], sum = 0.0, average;

    printf("Enter the numbers of elements: ");
    scanf("%d", &n);

    while (n > 100 || n <= 0)
    {
        printf("Error! number should in range of (1 to 100).\n");
        printf("Enter the number again: ");
        scanf("%d", &n);
    }

    for(i = 0; i < n; ++i)
    {
        printf("%d. Enter number: ", i+1);
        scanf("%f", &num[i]);
        sum += num[i];
    }
return sum;
}