C Program for One-Dimensional Array

In this article, you will learn and get code for using a one-dimensional (1D) array in a C program. For example,

int arr[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

The array arr is a one-dimensional array of size 10. Because in an array, indexing starts at 0, all the 10 numbers get stored in a way that

The last number, 10, gets stored at arr[9]. Let's move on to the program of the one-dimensional array given below.

One-Dimensional Array Program in C

Here is the program that uses a one-dimensional array. The question is: write a program in C that asks the user to enter the size and elements of a one-dimensional array and prints them back as output. The answer to this question is given below:

int main()
    int arr[50], size, i;
    printf("How many Elements You want to store in Array ? ");
    scanf("%d", &size);
    printf("\nEnter %d Elements: ", size);
    for(i=0; i<size; i++)
        scanf("%d", &arr[i]);
    printf("\nElements of this One-dimensional Array is:\n");
    for(i=0; i<size; i++)
        printf("%d ", arr[i]);
    return 0;

This program was built and run under Code::Blocks. Here is the sample run:

c program one dimensional array

Now supply the size for a one-dimensional array, say 8, and then enter any eight numbers one by one, say 1, 2, 3, 4, 5, 6, 7, 8, and press the ENTER key to see the output as shown in the snapshot given below:

one dimensional array program in c

Steps used in preceding program

These are some of the main steps used in the previous program. Supposing that the user enters 8 as the size and 1, 2, 3, 4, 5, 6, 7, and 8 as the elements of the array:

The same program in different languages

C Quiz

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