GATE | GATE CS 2018 | Question 52

Consider the following C program:

#include <stdio.h>
void fun1(char *s1, char *s2) {
  char *temp;
  temp = s1;
  s1 = s2;
  s2 = temp;
}
void fun2(char **s1, char **s2) {
  char *temp;
  temp = *s1;
  *s1 = *s2;
  *s2 = temp;
}
int main() {
  char *str1 = \"Hi\", *str2 = \"Bye\";
  fun1(str1, str2);
  printf(\"%s %s\", str1, str2);
  fun2(&str1, &str2);
  printf(\"%s %s\", str1, str2);
  return 0;
}

The output of the program above is

(A)

Hi Bye Bye Hi

(B)

Hi Bye Hi Bye

(C)

Bye Hi Hi Bye

(D)

Bye Hi Bye Hi

Answer

Please comment below if you find anything wrong in the above post
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