Array Insertion at End in DSA C - Build from Scratch

Array Insertion at End

📖 Scenario: You are managing a list of daily temperatures recorded in a small weather station. Each day, a new temperature reading is added to the end of the list.

🎯 Goal: Build a simple C program that stores temperature readings in an array and inserts a new temperature at the end of the array.

📋 What You'll Learn

Create an integer array called temperatures with the exact values: 23, 25, 22, 20, 24

Create an integer variable called size and set it to 5

Insert a new temperature 26 at the end of the temperatures array

Print the updated temperatures array elements separated by spaces

💡 Why This Matters

🌍 Real World

Adding new data points to a list is common in many applications like weather tracking, sales records, or sensor data collection.

💼 Career

Understanding how to manage arrays and insert elements is a fundamental skill for programming jobs involving data handling and embedded systems.

1

Create the initial array

Create an integer array called temperatures with the exact values 23, 25, 22, 20, 24.

DSA C

# Your code here

Hint

Use int temperatures[10] to create an array with space for 10 integers and initialize the first 5 values.

2

Create the size variable

Create an integer variable called size and set it to 5 to represent the current number of temperatures.

DSA C

int temperatures[10] = {23, 25, 22, 20, 24};
# Your code here

Hint

Use int size = 5; to keep track of how many temperatures are stored.

3

Insert new temperature at the end

Insert the new temperature 26 at the end of the temperatures array using the size variable, then increase size by 1.

DSA C

int temperatures[10] = {23, 25, 22, 20, 24};
int size = 5;
# Your code here

Hint

Use temperatures[size] = 26; to add the new temperature, then size++; to update the count.

4

Print the updated array

Use a for loop with variable i from 0 to size - 1 to print each element of temperatures separated by spaces.

DSA C

int temperatures[10] = {23, 25, 22, 20, 24};
int size = 5;
temperatures[size] = 26;
size++;
# Your code here

Hint

Use printf("%d ", temperatures[i]); inside the loop to print each temperature followed by a space.