Eof?

This is a discussion on Eof? within the C++ Programming forums, part of the General Programming Boards category; Is EOF the same thing as NULL?...

  1. #1
    _ Munkey01's Avatar
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    Eof?

    Is EOF the same thing as NULL?

  2. #2
    Programming Sex-God Polymorphic OOP's Avatar
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    no, EOF is "end of file" and it's usually defined as -1 (while NULL is usually 0)

  3. #3
    _ Munkey01's Avatar
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    Well in something like-

    Code:
    #include <iostream>
    #include <string>
    
    int main()
    {
    	string c;
    	std::cout << "Type in your sentence: ";
    	while ((c = getchar()) != EOF)
    		std::cout << c;
    	return 0;
    }
    what else can be used instead of EOF?

  4. #4
    Code Goddess Prelude's Avatar
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    >what else can be used instead of EOF?
    In this case anything, your code shouldn't compile. But assuming we changed it to something more reasonable:
    Code:
    #include <iostream>
    #include <cstdio>
    
    int main()
    {
      int c;
      
      std::cout<<"Type in your sentence: ";
      
      while ( ( c = getchar() ) != EOF )
        std::cout<< char ( c );
    }
    You can replace EOF with any valid character returned by getchar. In this case a good test is for '\n' so that the loop stops after a single line.

    -Prelude
    My best code is written with the delete key.

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