1D Array With a Example C Program
Subject: PPS (Programming for Problem Solving)
Contributed By: Sanjay
Created At: February 3, 2025
Question:
Explain One-Dimensional (1D) Array Array With a Example C Program
Explanation Video:
Explanation:
One-Dimensional (1D) Array
what is an Array?
An array is a collection of elements of the same data type, stored in contiguous memory locations. It allows storing multiple values under a single variable name, reducing the need for multiple separate variables.
What is 1D Array?
A 1D array is a linear collection of elements, similar to a list. It is used when we need to store multiple values but in a single row or single sequence.
Declaration and Initialization:
- Declaration tells the compiler to allocate memory for the array.
- Initialization assigns values to the array.
Syntax:
data_type array_name[size]; // Declaration
data_type array_name[size] = {value1, value2, ...}; // Initialization
Key Points:
All elements are stored contiguously in memory.
Elements can be accessed using indexing, starting from 0.
Can be used to store marks of students, temperatures, or any sequential data.
#include <stdio.h>
int main() {
int arr[5] = {10, 20, 30, 40, 50}; // Storing 5 integers
// Accessing and printing array elements
for(int i = 0; i < 5; i++) {
printf("arr[%d] = %d\n", i, arr[i]);
}
return 0;
}
arr[0] = 10
arr[1] = 20
arr[2] = 30
arr[3] = 40
arr[4] = 50