Entrance Announcement
MICTE 2080
2080 Magh 07
Teaching Lesson Plan 10
Subject: Computer Science Grade Level: 11
Lesson Title: Exploring String Functions in C
Objective: Students will be able to:
- Understand the concept of strings in C programming.
- Learn about different string functions available in the C standard library.
- Apply string functions to manipulate and process strings in C programs.
Materials Needed:
- Whiteboard and markers or presentation slides or grade 11 computer science book
- Examples of code snippets demonstrating string functions
- Computers with programming environments installed (optional, for practical exercises)
Lesson Duration: 50 minutes
Procedure:
- Introduction to Strings (5 minutes):
- Begin the lesson by defining strings as sequences of characters terminated by a null character ('\0').
- Explain the importance of strings in programming for representing text data.
- Discuss how strings are stored in memory as arrays of characters.
- Overview of String Functions (10 minutes):
- Introduce the concept of string functions as pre-defined functions provided by the C standard library for manipulating strings.
- Discuss the advantages of using string functions for common string operations.
- Mention that string functions are declared in the
<string.h>
header file.
- Commonly Used String Functions (30 minutes):
- Present a list of commonly used string functions, such as:
strlen()
: Returns the length of a string.strcpy()
: Copies one string to another.strcat()
: Concatenates (appends) one string to another.strcmp()
: Compares two strings.strchr()
: Searches for a character in a string.strstr()
: Searches for a substring in a string.
- Explain the syntax and parameters of each function and provide examples to illustrate their usage.
- Discuss error handling and potential pitfalls when using string functions.
- Present a list of commonly used string functions, such as:
- Practical Exercise (10 minutes):
- If computers are available, provide a programming task involving the use of string functions.
- Alternatively, distribute paper-based exercises or worksheets for students to practice using string functions.
- Encourage students to work individually or in pairs to solve the exercises.
- Conclusion (5 minutes):
- Summarize the key points covered in the lesson, emphasizing the importance of string functions in C programming.
- Encourage students to explore additional string functions and experiment with them in their programming projects.
- Provide resources for further learning, such as online documentation or tutorials on string functions in C.
6. Assignment
- Which function would you use to determine the length of a string in the standard C library?
- a)
strlen()
- b)
strcpy()
- c)
strcat()
- d)
strcmp()
- a)
- What is the value of
length
after executingstringLength("Hello")
?- a) 3
- b) 4
- c) 5
- d) 6
- In the
stringCopy
function, which statement correctly copies a character fromsource
todestination
?- a)
destination = source;
- b)
destination[i] = source[i];
- c)
*destination = *source;
- d)
strncpy(destination, source, strlen(source));
- a)