19. An executable program that performs a specific task for operating system is called as com-
mand. The commands are issued fr
om the command prompt of operating system. Some argu-
ments are to be associated with the commands and hence these arguments are called as
command line arguments.
20. Syntax main( int argc, char * argv[ ])
EXERCISES
A. Answer the following questions
1. What is a stream?
2. What is a file?
3. Describe the different derived classes from ios that control the disk I/O operations.
4. Describe the two methods of opening of file.
5. Explain detection of end of file with function eof().
6. Describe the ...
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