Free Test Standard string functi... – C Language

Q1: What does strcmp() return if both strings are equal?

A. 0 B. -1 C. 1 D. True

Q2: Which header file is required for strcmp()?

A. string.h B. stdio.h C. stdlib.h D. ctype.h

Q3: What is the return value of strcmp("apple", "banana")?

A. Negative value B. Positive value C. 0 D. Error

Q4: What does strcmp() compare?

A. Characters ASCII values B. String length only C. Memory addresses D. Data types

Q5: Which of the following is true about strcmp(s1, s2)?

A. Returns >0 if s1 > s2 B. Returns >0 if s1 < s2 C. Returns 0 if s1 > s2 D. Returns -1 always

Q6: What will strcmp("Cat", "Cat") return?

A. 0 B. 1 C. -1 D. Error

Q7: What type of function is strcmp()?

A. Library function B. User-defined function C. Inline function D. Macro

Q8: Which data type is returned by strcmp()?

A. int B. char C. void D. float

Q9: What will strcmp("abc", "ABC") return in ASCII comparison?

A. Positive value B. Negative value C. 0 D. Error

Q10: Which is correct usage of strcmp?

A. strcmp(s1, s2); B. strcmp(s1); C. strcmp(); D. strcmp(s1, s2, s3);

Q11: If strcmp(s1, s2) returns < 0, it means:

A. s1 < s2 B. s1 > s2 C. s1 = s2 D. Error

Q12: Which function is used to compare first n characters?

A. strncmp() B. strcmp() C. strncat() D. strcpy()

Q13: strcmp("abc", "abd") returns?

A. Negative value B. Positive value C. 0 D. Error

Q14: Which is faster: strcmp() or strncmp()?

A. Depends on data B. strcmp() C. strncmp() D. Both same

Q15: strcmp() stops comparison when:

A. First mismatch or null terminator B. After comparing all characters C. Never stops D. End of program

Q16: Return value of strcmp("a", "aa")?

A. Negative B. Positive C. 0 D. Error

Q17: strcmp() is case-sensitive?

A. Yes B. No C. Only for numbers D. Only for symbols

Q18: If we need case-insensitive compare, use:

A. strcasecmp() B. strcmp() C. strncmp() D. strcat()

Q19: What happens if we pass NULL to strcmp()?

A. Undefined behavior B. Returns 0 C. Returns -1 D. Returns +1

Q20: What is complexity of strcmp()?

A. O(n) B. O(1) C. O(log n) D. O(n^2)

Quiz for Standard string functions strcmp