From the course: C: Data Structures, Pointers, and File Systems
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Exploring the path - C Tutorial
From the course: C: Data Structures, Pointers, and File Systems
Exploring the path
- [Instructor] When a program runs, it has direct access to all the files in the same folder or directory. To work with other files, you must either construct the full or relative path to them or change to the given directory. First, it helps to know in which directory the program is running. In this exercise file, the get current working directory function at line 8 fetches a string representing the current working directory. This function is prototyped in the unistd header file included at line 2. The get current working directory function's two arguments are a character buffer, in which the path will be saved, and the size of that buffer. Build and run. And, of course, the output you see on your system will be different from what I see here. But on this system, this is the folder in which the program is running. When your program needs to operate in another directory, you use the chdir function, which is analogous to the chdir command in a Terminal window. As with the get current…
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Contents
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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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Challenge: Read and store filenames1m 6s
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Solution: Read and store filenames2m 52s
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