program output

Question

main()   {

static char a[3][4] = { "abcd", "efgh", "ijkl"};

putchar(**a);

 }

 

a) compilation error         b) run time error

c)garbage               d) none of these

Comments

what is use of putchar getchar and similler terms??

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Thet are used for displaying  and reading single  character

Answer 1

#include <stdio.h>
int main() {
  static char a[3][4] = {"axcd","efgh","ijkl"};

  // a is a 2D array of char
  // Two times dereference of a : **a == *(*(a+0)+0)
  // gives the first character of the first row

  putchar(**a); // prints a
  putchar(*(*a + 1));  // prints x	

  
}

Answer 2

prints the first character of the first element of the array 'a'. So ans is option D

Answer 3

For putchar(x) to print x, x has to be a character. Otherwise it would print undesirable output,

Here,  **a  gives the first character('a') of first character array("abcd").