String Basics and Memory Representation in DSA C - Build from Scratch

String Basics and Memory Representation

📖 Scenario: Imagine you are working on a simple program that stores and displays a person's name. Understanding how strings are stored in memory is important for managing text data efficiently.

🎯 Goal: You will create a string variable to hold a name, set a maximum length for the string, copy the name into the string, and then print the stored name to see how strings work in C.

📋 What You'll Learn

Create a character array to hold a name

Define a constant for the maximum length of the string

Copy a given name into the character array safely

Print the stored name

💡 Why This Matters

🌍 Real World

Understanding string basics and memory representation is essential for working with text data in low-level programming, embedded systems, and performance-critical applications.

💼 Career

Many programming jobs require knowledge of how strings are stored and manipulated in memory, especially in systems programming, firmware development, and software optimization roles.

1

Create a character array for the name

Create a character array called name with space for 20 characters.

DSA C

# Your code here

Hint

Use char name[20]; to create space for 20 characters.

2

Define the maximum length constant

Define a constant integer called MAX_LENGTH and set it to 20.

DSA C

char name[20];
# Your code here

Hint

Use const int MAX_LENGTH = 20; to define the maximum length.

3

Copy the name into the character array

Use strncpy to copy the string "Alice" into name using MAX_LENGTH as the limit.

DSA C

char name[20];
const int MAX_LENGTH = 20;
// Your code here

Hint

Use strncpy(name, "Alice", MAX_LENGTH - 1); and then set name[MAX_LENGTH - 1] = '\0'; to ensure the string ends properly.

4

Print the stored name

Use printf to print the string stored in name.

DSA C

#include 
#include 

char name[20];
const int MAX_LENGTH = 20;

strncpy(name, "Alice", MAX_LENGTH - 1);
name[MAX_LENGTH - 1] = '\0';

// Your code here

Hint

Use printf("%s\n", name); to print the string.