Array Deletion at Middle Index in DSA C - Build from Scratch

Array Deletion at Middle Index

📖 Scenario: You have a list of daily temperatures recorded in an array. Sometimes, the middle day's temperature is incorrect and needs to be removed to keep the data accurate.

🎯 Goal: Build a program that deletes the middle element from an array of temperatures and shows the updated list.

📋 What You'll Learn

Create an integer array called temps with exactly 7 values: 23, 25, 22, 20, 24, 26, 21

Create an integer variable called size and set it to 7

Write code to delete the middle element (index 3) from the temps array by shifting elements left

Print the updated array elements separated by spaces

💡 Why This Matters

🌍 Real World

Deleting incorrect or unwanted data points from sensor readings or logs is common in data cleaning.

💼 Career

Understanding array manipulation is fundamental for software developers working with low-level data or embedded systems.

1

Create the temperature array

Create an integer array called temps with these exact values: 23, 25, 22, 20, 24, 26, 21.

DSA C

# Create the integer array temps with the given values
# Your code here

Hint

Use int temps[7] = {23, 25, 22, 20, 24, 26, 21}; to create the array.

2

Set the size variable

Create an integer variable called size and set it to 7.

DSA C

int temps[7] = {23, 25, 22, 20, 24, 26, 21};
# Create the integer variable size and set it to 7
# Your code here

Hint

Use int size = 7; to store the array length.

3

Delete the middle element

Write a for loop with variable i starting from 3 to size - 2 that shifts elements left in the temps array to delete the middle element at index 3. Then decrease size by 1.

DSA C

int temps[7] = {23, 25, 22, 20, 24, 26, 21};
int size = 7;
// Shift elements left to delete middle element at index 3
// Your code here

Hint

Use a for loop from 3 to size - 2 and assign temps[i] = temps[i + 1]; inside the loop. Then reduce size by 1.

4

Print the updated array

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

DSA C

int temps[7] = {23, 25, 22, 20, 24, 26, 21};
int size = 7;
for (int i = 3; i < size - 1; i++) {
    temps[i] = temps[i + 1];
}
size--;
// Print the updated array elements separated by spaces
// Your code here

Hint

Use a for loop to print each element with printf("%d", temps[i]); and print a space after each except the last.