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  • Question
  • Which of the following function sets first n characters of a string to a given character?


  • Options
  • A. strinit()
  • B. strnset()
  • C. strset()
  • D. strcset()

  • Correct Answer
  • strnset() 

    Explanation
    Declaration:

    char *strnset(char *s, int ch, size_t n); Sets the first n characters of s to ch

    #include <stdio.h>
    #include <string.h>
    
    int main(void)
    {
       char *string = "abcdefghijklmnopqrstuvwxyz";
       char letter = 'x';
    
       printf("string before strnset: %s\n", string);
       strnset(string, letter, 13);
       printf("string after  strnset: %s\n", string);
    
       return 0;
    }
    

    Output:

    string before strnset: abcdefghijklmnopqrstuvwxyz

    string after strnset: xxxxxxxxxxxxxnopqrstuvwxyz


    More questions

    • 1. By default structure variable will be of auto storage class

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 2. Bitwise can be used to reverse a sign of a number.

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

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 5. 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
    • 6. Bitwise & can be used to check if more than one bit in a number is on.

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

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

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

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

    • Options
    • A. True
    • B. False
    • Discuss


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