C-Command Line Arguments Questions and Answers
Command line arguments in C allow passing values to a program at runtime through the main() function parameters argc and argv. This feature is essential for flexible and interactive program execution. Many programming questions and answers in coding interviews test this concept through practical applications and debugging scenarios. This section provides C command line argument questions with answers and explanations, helping learners strengthen their understanding of runtime input handling. These examples are useful for TCS, Tech Mahindra, and Wipro placement exams where efficiency and clarity of coding are tested.
C-Command Line Arguments
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129 questions
31. fclose () function can
- Closes the stream
- Flushes all unwritten data from the stream.
- Discard all unread buffered input and free all allocated buffer.
- All of the above
32. If an error occurs during closing of a file then fclose () returns
- EOF
- Zero
- File pointer
- None of these
33. File I/O functions
- Contains functions to receive input from KB and write output to VDU.
- Contains functions to perform I/O operations on hard disk.
- Contains functions similalr to all operating system.
- All of the above
34. Find the output #include "stdio.h" void main ( ) { int i=5; char x='x'; float y=3.9; char str[20]; sprint(str,"%d %c %f",i,x,y); printf("%s",str); }
- x
- 5 x 3.9
- 5 x 3.90000
- Compilation error
35. The commonly used functions for writing to a text stream are
- putc( )
- fputc( )
- fputs( )
- All of the above
36. in UNIX, file protection can be assigned at
- user level
- Group level
- Other
- All of the above
37. The sector size of a disk working in MS DOS envoronment is
- 512 bytes
- 256 bytes
- 1024 bytes
- None of these
38. The function read ( ) returns
- Actual number of bytes transferredon successful reading
- -1 if an EOF is found
- 0 if an error occurs.
- All of the above
39. Find out the output #include "fcnt1.h" #include"sys\stat.h" void main ( ) { int x; x=open ("raja.txt", 0_CREAT | _TEXT, S_TWRITE); printf ("%d", k); }
- 5
- 6
- 7
- None of these
40. State the correct statement.
- fseek() only works with file handler
- Iseek() only works with file pointer
- close() closes the file pointer
- None of these