Interview Questions

1. Which is the data type used to declare the strings?

Options:

a. strings

b. character

c. integer

d. none of above

Reveal Answer

2. Which of the following declaration is correct to declare the strings?

Options:

a. char city[10];

b. char city;

c. Char []city;

d. None of above

Reveal Answer

3. In C every string ends with ------------ character

Options:

a. \0 (Null)

b. \t tab space

c. \n newline

d. 0

Reveal Answer

4. Which one of the following string Initialization are correct?

Options:

a. char name[10] = { 'A', 'l', 'a', 'b', 'a', 'm', 'a', '\0' };

b. char *name = { 'A', 'l', 'a', 'b', 'a', 'm', 'a' };

c. char name={“Alabama”};

d. char *name={“A”,”l”,”b”,”a”,”m”};

Reveal Answer

5. What will be the output of the above program? #include<stdio.h> void main() { char str1[]="Hello"; char str2[10]="hai"; str2=str1; printf(“%c”,str2); }

Options:

a. Hello

b. Hai

c. Compilation Error

d. Runtime Error

Reveal Answer

6. What will be the output of the above program? #include<stdio.h> void main() { char s = "Good morning"; char p; p = s; puts(p); return 0; }

Options:

a. Good

b. Good Morning

c. Compilation Error

d. Runtime Error

Reveal Answer

7. What will be the output of the below program? #include<stdio.h> int main() { char *str1="Hello"; str1="bye"; printf(str1); return 0; }

Options:

a. bye

b. No output

c. Error

d. None of above

Reveal Answer

8. Which format specifiers are used to read the strings

Options:

a. %s

b. %c

c. %g

d. %l

Reveal Answer

9. How many types of string handling mechanism are available?

Options:

a. 6

b. 5

c. 4

d. 7

Reveal Answer

10. In which one of the following function will copy the one string to another string. Strcpy() Strcmp() Strchr() Strstr()

Options:

a. Strcpy()

b. Strcmp()

c. Strchr()

d. Strstr()

Reveal Answer

11. When initializing a string variable during its declaration, we must include the null character as part of the string constant, like ‘GOOD\0’.

Options:

a. True

b. False

Reveal Answer

12. The gets function automatically appends the null character at the end of the string read from the keyboard.

Options:

a. True

b. False

Reveal Answer

13. When reading a string with scanf, it automatically inserts the terminating null character.

Options:

a. True

b. False

Reveal Answer

14. String variables cannot be used with the assignment operator.

Options:

a. True

b. False

Reveal Answer

15. We cannot perform arithmetic operations on character variables.

Options:

a. True

b. False

Reveal Answer

16. In the ASCII collating sequence, the uppercase letters precede lowercase letters. True False

Options:

a. True

b. False

Reveal Answer

17. In C, strings cannot be initialized at run time.

Options:

a. True

b. False

Reveal Answer

18. The input function gets has one string parameter.

Options:

a. True

b. False

Reveal Answer

19. The function call strcpy (s2, s1); copies string s2 into string s1.

Options:

a. True

b. False

Reveal Answer

20. The function calls strcmp (‘abc’, ‘ABC’); returns a positive number.

Options:

a. True

b. False

Reveal Answer

21. What will be the output of the following statements? #include<stdio.h> #include<string.h> int main() { printf("%d",strcmp("push", "pull")); }

Options:

a. 23

b. 7

c. 1

d. 17

Reveal Answer

22. Assume that s1, s2 and s3 are declared as follows: #include<stdio.h> #include<string.h> int main() { char s1[10]= "he",s2[20]= "she", s3[30], s4[30]; printf("%s\n", strcpy(s3, s1)); printf("%s\n", strcat(strcat(strcpy(s4,s1),"or"),s2)); printf("%d %d",strlen(s2)+strlen(s3),strlen(s4)); }

Options:

a. he heorshe 5 7

b. heorshe 5 7

c. 5 7

d. he heorshe

Reveal Answer

23. What will be the output of the following segment? char s1[]= “Kolkata”; char s2[]= “Pune”; strcpy(s1, s2); printf(“%s”,s1);

Options:

a. Kolkata

b. Pune

c. Hyderabad

d. Mabaka

Reveal Answer

24. What will be the output of the following segments? char s1[]= “NEW DELHI”; char s2[]= “BANGALORE”; strcpy(s1, s2, 3); printf(“%s”, s1);

Options:

a. NEW DELHI

b. Compilation Error

c. BANGALORE

d. NEW DELHI BANGALORE

Reveal Answer

25. int main() { static char s[]=”Rendezvous !”; printf(“%d”,*(s+strlen(s))); return 0; } What will be the output of the above program?

Options:

a. No output

b. 10

c. 0

d. 9

Reveal Answer

Interview Questions and Answer

1. Which is the data type used to declare the strings?

2. Which of the following declaration is correct to declare the strings?

3. In C every string ends with ------------ character

4. Which one of the following string Initialization are correct?

5. What will be the output of the above program? #include<stdio.h> void main() { char str1[]="Hello"; char str2[10]="hai"; str2=str1; printf(“%c”,str2); }

6. What will be the output of the above program? #include<stdio.h> void main() { char s = "Good morning"; char p; p = s; puts(p); return 0; }

7. What will be the output of the below program? #include<stdio.h> int main() { char *str1="Hello"; str1="bye"; printf(str1); return 0; }

8. Which format specifiers are used to read the strings

9. How many types of string handling mechanism are available?

10. In which one of the following function will copy the one string to another string. Strcpy() Strcmp() Strchr() Strstr()

11. When initializing a string variable during its declaration, we must include the null character as part of the string constant, like ‘GOOD\0’.

12. The gets function automatically appends the null character at the end of the string read from the keyboard.

13. When reading a string with scanf, it automatically inserts the terminating null character.

14. String variables cannot be used with the assignment operator.

15. We cannot perform arithmetic operations on character variables.

16. In the ASCII collating sequence, the uppercase letters precede lowercase letters. True False

17. In C, strings cannot be initialized at run time.

18. The input function gets has one string parameter.

19. The function call strcpy (s2, s1); copies string s2 into string s1.

20. The function calls strcmp (‘abc’, ‘ABC’); returns a positive number.

21. What will be the output of the following statements? #include<stdio.h> #include<string.h> int main() { printf("%d",strcmp("push", "pull")); }

22. Assume that s1, s2 and s3 are declared as follows: #include<stdio.h> #include<string.h> int main() { char s1[10]= "he",s2[20]= "she", s3[30], s4[30]; printf("%s\n", strcpy(s3, s1)); printf("%s\n", strcat(strcat(strcpy(s4,s1),"or"),s2)); printf("%d %d",strlen(s2)+strlen(s3),strlen(s4)); }

23. What will be the output of the following segment? char s1[]= “Kolkata”; char s2[]= “Pune”; strcpy(s1, s2); printf(“%s”,s1);

24. What will be the output of the following segments? char s1[]= “NEW DELHI”; char s2[]= “BANGALORE”; strcpy(s1, s2, 3); printf(“%s”, s1);

25. int main() { static char s[]=”Rendezvous !”; printf(“%d”,*(s+strlen(s))); return 0; } What will be the output of the above program?

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