Write a C program to search an element in the array

C program to search an element in the array


Write a C Program to search an element in the array.¬†Here’s simple Program to search an element in the array in C Programming Language.


What is an Array ?


Arrays a kind of data structure that can store a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type.

Instead of declaring individual variables, such as number0, number1, …, and number99, you declare one array variable such as numbers and use numbers[0], numbers[1], and …, numbers[99] to represent individual variables. A specific element in an array is accessed by an index.

All arrays consist of contiguous memory locations. The lowest address corresponds to the first element and the highest address to the last element.


Here is source code of the C Program to search an element in the array. The C program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.


SOURCE CODE : :


/*  C Program to search an element in the array  */

#include <stdio.h>

int main()
{
    int arr[100];
    int size, i, num, flag;

    /*
     * Read size of array and elements in array
     */
    printf("Enter size of array :: ");
    scanf("%d", &size);

    printf("\nEnter elements in array: \n");
    for(i=0; i<size; i++)
    {
        printf("\nEnter %d element in array :: ",i+1);
        scanf("%d", &arr[i]);
    }

    printf("\nEnter the element to search within the array: ");
    scanf("%d", &num);

    /* Supposes that element is not in the array */
    flag = 0;
    for(i=0; i<size; i++)
    {
        /*
         * If element is found in the array
         */
        if(arr[i]==num)
        {
            flag = 1;
            printf("\n%d is found at position %d", num, i+1);
            break;
        }
    }

    /*
     * If element is not found in array
     */
    if(flag==0)
    {
        printf("\n%d is not found in the array", num);
    }

    return 0;
}

Output : :


Enter size of array :: 6

Enter elements in array:

Enter 1 element in array :: 1

Enter 2 element in array :: 2

Enter 3 element in array :: 3

Enter 4 element in array :: 4

Enter 5 element in array :: 5

Enter 6 element in array :: 6

Enter the element to search within the array: 5

5 is found at position 5

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