Array Access and Update at Index in DSA C - Build from Scratch

Array Access and Update at Index

📖 Scenario: You are managing a small inventory system for a store. The store keeps track of the quantity of 5 different products using an array.

🎯 Goal: You will create an array to store product quantities, set a specific product's quantity, update it, and then print the updated quantities.

📋 What You'll Learn

Create an integer array called quantities with exactly 5 elements: 10, 20, 30, 40, 50

Create an integer variable called index and set it to 2

Update the element at index in quantities to 35

Print all elements of quantities separated by spaces

💡 Why This Matters

🌍 Real World

Arrays are used to store lists of items like product quantities, scores, or measurements in many software applications.

💼 Career

Understanding how to access and update array elements is fundamental for programming tasks in software development, data processing, and embedded systems.

1

Create the initial array

Create an integer array called quantities with exactly 5 elements: 10, 20, 30, 40, 50

DSA C

# Your code here

Hint

Use curly braces {} to list the 5 numbers inside the array declaration.

2

Set the index variable

Create an integer variable called index and set it to 2

DSA C

int quantities[5] = {10, 20, 30, 40, 50};
# Your code here

Hint

Use int index = 2; to create the variable.

3

Update the array element at index

Update the element at index in the quantities array to 35

DSA C

int quantities[5] = {10, 20, 30, 40, 50};
int index = 2;
# Your code here

Hint

Use the syntax quantities[index] = 35; to update the value.

4

Print the updated array

Use a for loop with variable i from 0 to 4 to print all elements of quantities separated by spaces on one line

DSA C

int quantities[5] = {10, 20, 30, 40, 50};
int index = 2;
quantities[index] = 35;
# Your code here

Hint

Use printf("%d", quantities[i]); inside the loop and print a space except after the last element.