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CuriousTab

CuriousTab

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  • Question
  • Which of the following function is used to find the first occurrence of a given string in another string?


  • Options
  • A. strchr()
  • B. strrchr()
  • C. strstr()
  • D. strnset()

  • Correct Answer
  • strstr() 

    Explanation
    The function strstr() Finds the first occurrence of a substring in another string

    Declaration: char *strstr(const char *s1, const char *s2);

    Return Value:
    On success, strstr returns a pointer to the element in s1 where s2 begins (points to s2 in s1).
    On error (if s2 does not occur in s1), strstr returns null.

    Example:

    #include <stdio.h>
    #include <string.h>
    
    int main(void)
    {
       char *str1 = "CuriousTab", *str2 = "ia", *ptr;
    
       ptr = strstr(str1, str2);
       printf("The substring is: %s\n", ptr);
       return 0;
    }
    

    Output: The substring is: iaCURIOUSTAB


    More questions

    • 1. Bitwise can be used to reverse a sign of a number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 2. Is it necessary that in a function which accepts variable argument list there should be at least be one fixed argument?

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 3. Bitwise can be used to generate a random number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 4. A function that receives variable number of arguments should use va_arg() to extract the last argument from the variable argument list.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. Bitwise & can be used to check if more than one bit in a number is on.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. The preprocessor can trap simple errors like missing declarations, nested comments or mismatch of braces.

    • Options
    • A. True
    • B. False
    • Discuss
    • 7. It is necessary that a header files should have a .h extension?

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 8. Bitwise | can be used to set multiple bits in number.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 9. Bitwise & can be used to check if a bit in number is set or not.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. A pointer union CANNOT be created

    • Options
    • A. Yes
    • B. No
    • Discuss


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