Common string operations - Mini Project: Build & Apply

Common string operations

📖 Scenario: You are working on a simple program that processes a user's name. You want to practice basic string operations like creating a string, finding its length, copying it, and comparing it.

🎯 Goal: Build a C program that creates a string with a name, finds its length, copies it to another string, compares the two strings, and prints the results.

📋 What You'll Learn

Create a string variable with a specific name

Create an integer variable to store the string length

Use strlen to find the length of the string

Use strcpy to copy the string to another variable

Use strcmp to compare the two strings

Print the length and comparison result

💡 Why This Matters

🌍 Real World

String operations like copying, comparing, and measuring length are common in programs that handle text input, such as user names, messages, or file names.

💼 Career

Understanding basic string functions is essential for programming in C, especially in system programming, embedded systems, and software development where manual string handling is common.

1

Create the initial string

Create a character array called name and initialize it with the string "Alice".

C

# Create a character array called name and initialize it with "Alice"
// Your code here

Need a hint?

Use char name[] = "Alice"; to create the string.

2

Find the length of the string

Create an integer variable called length and set it to the length of name using strlen(name).

C

#include 
#include 

char name[] = "Alice";

// Create an integer variable length and set it to strlen(name)
// Your code here

Need a hint?

Use int length = strlen(name); to get the string length.

3

Copy the string to another variable

Create a character array called copy with size 10. Use strcpy(copy, name) to copy the string from name to copy.

C

#include 
#include 

char name[] = "Alice";
int length = strlen(name);

// Create a char array copy with size 10 and copy name into it
// Your code here

Need a hint?

Declare char copy[10]; and then use strcpy(copy, name);.

4

Compare the strings and print results

Create an integer variable cmp and set it to strcmp(name, copy). Then print the length and comparison result using printf with the format: Name length: %d\nComparison result: %d\n.

C

#include 
#include 

char name[] = "Alice";
int length = strlen(name);
char copy[10];
strcpy(copy, name);

// Create int cmp = strcmp(name, copy) and print length and cmp
// Your code here

Need a hint?

Use int cmp = strcmp(name, copy); and then printf to show the results.