C | Structure & Union | Question 9

# include <iostream>
# include <string.h>
using namespace std;

struct Test
{
  char str[20];
};

int main()
{
  struct Test st1, st2;
  strcpy(st1.str, "GeeksQuiz");
  st2 = st1;
  st1.str[0] = 'S';
  cout << st2.str;
  return 0;
}

(A) Segmentation Fault
(B) SeeksQuiz
(C) GeeksQuiz
(D) Compiler Error

Answer: (C)
Explanation: Array members are deeply copied when a struct variable is assigned to another one. See Are array members deeply copied? for more details.
Quiz of this Question