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
11. Find the output #include"stdio.h" void main ( ) { FILE *p; char ch; p=fopen ("raja.txt", "w"); putc (50,p); putc (80, p); putc (70, p); while ((ch=getc(p))!=EOF) putch (ch); fclose (p); }
- 508070
- 2pf
- Compilation error
- No output
12. Which of the following are similar ?
- printf ("%d", x) and fprintf (stdin, "%d",x)
- scanf("%d",&x) and fscanf (stdout, "%d",&x)
- printf ("%d", x) and fprintf(stdout, "%d", x) fprintf (stdout, "%d", x)
- None of the above
13. What is the contents of the file "letter.txt" #include"stdio.h" void main ( ) { FILE *p; char m[ ] = "I \m \the \best"; p=fopen (letter.txt", "w"); fputs (m,p); fclose (p); }
- I am the best
- I 0m the 0est
- i \am \the \best
- None of these
15. The fclose ( ) function
- closes only one file at a time
- Closes all the files opened
- Closes only text file
- None of these
16. The fseek ( ) function
- Needs 2 arguments
- Makes the rewind function unnecessary
- Is meant for checking whether a given file exists or not.
- Both b and c
17. Find the output #include "stdio.h" void main ( ) { FILE *p; printf ("%d %d", stderr->fd, _streams[3].fd); }
- 2 3
- 4 4
- 1 2
- Compilation error
20. Find the output #include "stdio.h" void main ( ) { FILE *p=0; p++; printf("%d",p); }
- 8
- 16
- Compilation error
- None of these