you can read a single word at a time from a file usingSelect one:a.fgetc functionb.fscanf functionc.Both A and Bd.None of above

Break Down the Problem

1. Identify the Functions: We need to assess the given options regarding their ability to read a single word from a file.
2. Understand File Reading: Familiarize oneself with how each function operates in the context of file I/O in programming.

Relevant Concepts

• fgetc function: This reads a single character from the file.
• fscanf function: This can read formatted data, including words, from a file.

Analysis and Detail

1. fgetc Function:

   • Usage: fgetc(FILE *stream)
   • This function retrieves only one character at a time, not a full word.

2. fscanf Function:

   • Usage: fscanf(FILE *stream, const char *format, ...)
   • This function can utilize the %s format specifier to read a single word (up to the first whitespace).

3. Both A and B: Not applicable since fgetc cannot read a word, only a character.

4. None of above: This is incorrect since fscanf can read a word while fgetc cannot.

Verify and Summarize

The fgetc function does not read a word but only a single character, while fscanf can read formatted input including words. Therefore, the best answer is that only fscanf can read a complete word from a file.

Final Answer

The correct answer is b. fscanf function.