Q:

C program to check a given filename is a directory or not

mahmoud2506
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2022-05-04
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C program to check a given filename is a directory or not

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mahmoud2506
2022-05-04
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Read the name of the file and check whether it is file is a directory or not.

Program:

The source code to check a given filename is a directory or not is given below. The given program is compiled and executed using GCC compile on UBUNTU 18.04 OS successfully.

// C program to check a file is a directory or not

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

int isDir(const char* fileName)
{
    struct stat path;

    stat(fileName, &path);

    return S_ISREG(path.st_mode);
}

int main()
{
    char fileName[16];
    int ret = 0;

    printf("Enter filename: ");
    scanf("%s", fileName);

    ret = isDir(fileName);

    if (ret == 0)
        printf("Given file is a directory\n");
    else
        printf("Given file is not a directory\n");

    return 0;
}

Output:

RUN 1:
Enter filename: hello.txt
Given file is not a directory

RUN 2:
Enter filename: image
Given file is a directory

Explanation:

In the above program, we created two functions isDir() and main(). The isDir() function is used to check a given file is a directory or not. Here we used stat() function and S_ISREG() macro.

In the main() function, we created a character array fileName. Then we read the name from the user. Then we checked given file is a directory or not and printed the appropriate message on the console screen.

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File Handling Examples Programs in C language
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