Question

If a file pointer is null what does it mean​

Answer 1

Answer:

7) If a FILE pointer is NULL what does it mean.? FILE *fp; fp=fopen("abc.txt","w"); A) Unable to open a file named abc.txt. B) abc.txt is not available on disk

Explanation:

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Answer 2

Answer:

n your case you can check file open or not by checking fp to NULL. Upon successful completion fopen(), fdopen() and freopen() return a FILE pointer. Otherwise, NULL is returned and errno is set to indicate the error.