Interview Questions

1. How to declare main when it receives command-line arguments?

Options:

a. int main(int argc, char *argv[])

b. int main(argc, argv)

c. int main() { int argc; char *argv; }

d. None of Above

Reveal Answer

2. What is meant by the 'c' and 'v' in argv?

Options:

a. 'c' means argument count 'v' means argument vector

b. 'c' means argument control 'v' means argument vector

c. 'c' means argument count 'v' means argument vertex

d. None of above

Reveal Answer

3. How to write command line arguments if argument has a space?

Options:

a. “command line arguments”

b. % command line arguments %

c. ‘command line arguments’

d. & command line arguments

Reveal Answer

4. Even if integer or float type arguments are given at command prompt they are considered as strings.

Options:

a. True

b. False

Reveal Answer

5. Which of the following is invalid for the below code? int main(int first, char sec){ }

Options:

a. first contains count of arguments supplied at command-line

b. In place of first and sec, argc and argv should be used

c. sec[] contains addresses of arguments supplied at a command line

d. None of above

Reveal Answer

6. What will be the output of the program (cmd> prog one two three) given below if it is executed from the command line? #include<stdio.h> int main(int argc, char argv) { printf("%c\n", argv++); return 0; }

Options:

a. prog

b. prog one

c. c

d. compilation error

Reveal Answer

7. What will be the output of the program (cmd> trial 1 2 3) given below if it is executed from the command line? #include<stdio.h> int main(int argc, char *argv[]) { int i; i = argv[1] + argv[2] + argv[3]; printf("%d", i); return 0; }

Options:

a. 6

b. Trial 1 2 3

c. Error

d. Garbage value

Reveal Answer

8. argc refers to the Number of arguments passed from the command line arguments

Options:

a. True

b. False

Reveal Answer

9. argv() refers to the pointer array which points to each argument passed to the program.

Options:

a. True

b. False

Reveal Answer

10. If no arguments are supplied from command prompt then value of argc() contains

Options:

a. One

b. Zero

c. -1

d. Garbage value

Reveal Answer

11. What would be the output if we try to execute following code(assuming the following input deccan soft services)? printf(“%s\n”,argv[argc]);

Options:

a. Null

b. City

c. In

d. Segmentation fault

Reveal Answer

12. Which of the following header file provides functions and macros to implement the functionality of variable arguments?

Options:

a. stdio.h

b. stdlib..h

c. stdarg.h

d. conio.h

Reveal Answer

13. What has to create to define a function with last parameter as ellipses and the one just before the ellipses is always an int which will represent number of arguments.

Options:

a. int

b. float

c. char

d. pointer

Reveal Answer

14. Which symbol is used to declare indeterminate number of arguments?

Options:

a. …

b. !..

c. Arguments are separated by & symbol

d. …..

Reveal Answer

15. Command line arguments are:

Options:

a. Passed at runtime

b. passed at compile time

c. Passed to the main function during preprocessing of the program

d. passed during dynamic memory allocation

Reveal Answer

Interview Questions and Answer

1. How to declare main when it receives command-line arguments?

2. What is meant by the 'c' and 'v' in argv?

3. How to write command line arguments if argument has a space?

4. Even if integer or float type arguments are given at command prompt they are considered as strings.

5. Which of the following is invalid for the below code? int main(int first, char sec){ }

6. What will be the output of the program (cmd> prog one two three) given below if it is executed from the command line? #include<stdio.h> int main(int argc, char argv) { printf("%c\n", argv++); return 0; }

7. What will be the output of the program (cmd> trial 1 2 3) given below if it is executed from the command line? #include<stdio.h> int main(int argc, char *argv[]) { int i; i = argv[1] + argv[2] + argv[3]; printf("%d", i); return 0; }

8. argc refers to the Number of arguments passed from the command line arguments

9. argv() refers to the pointer array which points to each argument passed to the program.

10. If no arguments are supplied from command prompt then value of argc() contains

11. What would be the output if we try to execute following code(assuming the following input deccan soft services)? printf(“%s\n”,argv[argc]);

12. Which of the following header file provides functions and macros to implement the functionality of variable arguments?

13. What has to create to define a function with last parameter as ellipses and the one just before the ellipses is always an int which will represent number of arguments.

14. Which symbol is used to declare indeterminate number of arguments?

15. Command line arguments are:

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