This homework packet is designed to test your comprehension of data files. What

Question

This homework packet is designed to test your comprehension of data files. What is the name of the function that returns true if you are at the end of an input file? _____ We learned that gets allows you to read an entire line of data from the user into a string variable. There is a similar operation that allows you to read in exactly 1 char from the keyboard. This is a alternative to using scanf_s("%c", &variablename;) Research in your text to determine the name of this function. _____ When you open a data file for reading, what is the string you provide to the fopen operation that designates the file as read only? _____ When you open a file for output, what is the string you provide to the fopen that designates the file as writeable? T/F-A program cannot open more than one file at a time _____. Briefly explain why it is better to gather large sets of input from a data file instead of from a user typing it in at the keyboard.

Explanation / Answer

1)eof( ), that returns nonzero (TRUE) when there are no more data to be read from an input file stream, and zero ( FALSE) otherwise.1

2)getchar() is used to get or read the input (i.e a single character) at run time.
eg:
char ch;
ch = getchar();

3) "r" is used for read-only mode
eg:
FILE *fp;
fp = fopen("file.txt","r");

4)"w" is used for write mode
eg:
FILE * fp;
fp = fopen ("file.txt", "w");

5)false

6)because you can access and process huge information at once instead of waiting for the user input.Processing data from a file is much faster than taking input from command line

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