Two C library functions that manipulate strings are strcpy() and strcat(). The strcpy() function copies a string into a buffer. The strcat() function appends, or concatenates, one string to the end of another. Always remember when copying or concatenating strings to ensure that the buffers are capable of storing all characters in the resulting string.
- [Instructor] The C language is rather thin … on string manipulation functions. … This limitation poses no problem … as you can easily craft your own. … Two functions available to you in the standard C library … are string copy to copy strings and string cat … to concatenate strings or append one string … to the end of another. … Both functions are prototyped in the string.h header file. … The string copy function has this format. … The first argument is the destination buffer … to which the second argument, the source string, … is to be copied. … It's vital that the destination buffer be large enough … to accommodate the string copied into it. … In this exercise file, … a string original is declared at line six. … Line seven declares duplicate, an empty buffer with more … than enough storage to hold the original string. … The string copy function at line 10 copies … the original string into the duplicate buffer … and line 11 displays the result. … Build in one … and there you go. … This exercise file improves upon the proceeding example …
Author
Dan Gookin
Released
5/1/2019- Working with arrays
- Building a structure
- Creating an array of structures
- Testing characters
- Working with strings in C
- Using pointers to manipulate data
- Manipulating files
- Using command-line arguments
- Working with time functions
Skill Level Intermediate
Duration
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Introduction
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Using the exercise files1m 23s
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Configuring the IDE2m 34s
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1. Arrays and Structures
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Understanding arrays2m 59s
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Working with arrays3m 5s
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Modifying arrays3m 11s
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Building a structure3m 23s
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Nesting structures2m 56s
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Understanding a union2m 47s
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2. Characters and Strings
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Testing characters2m 34s
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Fetching string input3m 18s
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Sending string output2m 46s
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Using printf() placeholders3m 36s
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Exploring string functions3m 29s
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Manipulating strings3m 53s
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Avoiding string problems2m 27s
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3. Pointers
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Understanding pointers3m 19s
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Doing pointer math2m 57s
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Allocating storage3m 15s
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Working with a pointer array3m 38s
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Using pointers in structures3m 30s
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Returning pointers2m 39s
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4. Files and the Operating System
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Reading from a file3m 25s
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Writing to a file3m 24s
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Working with raw data2m 53s
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Using random file access2m 47s
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Manipulating files2m 57s
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Exploring the path2m 8s
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Reading a directory2m 53s
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Getting file information2m 46s
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Using command line arguments2m 44s
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Calling the operating system2m 46s
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5. The Interesting and Extraordinary
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Solving math puzzles3m 32s
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Creating random numbers3m 42s
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Working with time functions3m 54s
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Sorting data4m 8s
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Using a debugger4m 53s
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Writing your own header file2m 53s
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Challenge: Lotto simulation1m 18s
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Solution: Lotto simulation2m 29s
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Conclusion
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Next steps1m 52s
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Video: Manipulating strings