Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
Bartleby Related Questions Icon

Related questions

Question

Can you help me with this homework, I attached the picture.

 

```markdown
## 2. The `findStr` Function

Implement your version of the standard C-library function `strstr()`. To avoid conflicts with names in the standard library, use `findStr()`.

```c
const char * findStr(const char *s1, const char *s2);
```

The `findStr` prototype.

### The function:

- Finds the **first occurrence** of the entire string `s2` inside the string `s1`.
- Returns a pointer to the first occurrence.
- If no match is found, then return the C++ `nullptr`.
- If `s2` points to a string of zero length, then return `s1`.

### Here are some examples:

```c
findStr("cowtown", "ow");  // returns &s1[1]
findStr("cowtown", "own"); // returns &s1[4]
findStr("cowtown", "two"); // returns nullptr
```

Using the `findStr` function.

### Note

You may use pointer notation or array notation. However, **do not use any functions from the standard library**. That includes `strlen()` or the C++ `string` class.
```
expand button
Transcribed Image Text:```markdown ## 2. The `findStr` Function Implement your version of the standard C-library function `strstr()`. To avoid conflicts with names in the standard library, use `findStr()`. ```c const char * findStr(const char *s1, const char *s2); ``` The `findStr` prototype. ### The function: - Finds the **first occurrence** of the entire string `s2` inside the string `s1`. - Returns a pointer to the first occurrence. - If no match is found, then return the C++ `nullptr`. - If `s2` points to a string of zero length, then return `s1`. ### Here are some examples: ```c findStr("cowtown", "ow"); // returns &s1[1] findStr("cowtown", "own"); // returns &s1[4] findStr("cowtown", "two"); // returns nullptr ``` Using the `findStr` function. ### Note You may use pointer notation or array notation. However, **do not use any functions from the standard library**. That includes `strlen()` or the C++ `string` class. ```
Expert Solution
Check Mark
Knowledge Booster
Background pattern image
Similar questions
Recommended textbooks for you
Text book image
Computer Networking: A Top-Down Approach (7th Edi...
Computer Engineering
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:PEARSON
Text book image
Computer Organization and Design MIPS Edition, Fi...
Computer Engineering
ISBN:9780124077263
Author:David A. Patterson, John L. Hennessy
Publisher:Elsevier Science
Text book image
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:9781337569330
Author:Jill West, Tamara Dean, Jean Andrews
Publisher:Cengage Learning
Text book image
Concepts of Database Management
Computer Engineering
ISBN:9781337093422
Author:Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:Cengage Learning
Text book image
Prelude to Programming
Computer Engineering
ISBN:9780133750423
Author:VENIT, Stewart
Publisher:Pearson Education
Text book image
Sc Business Data Communications and Networking, T...
Computer Engineering
ISBN:9781119368830
Author:FITZGERALD
Publisher:WILEY