Which of the following statement are correct about the program

Which of the following statement are correct about the program given below?

#include <stdio.h>
int main ( )
{
     int x = 10, y = 20;
     if (x == 15) && if (y == 20)
          printf ("Have a nice day\n");
     return 0;
}

1. Output: Have a nice day
2. No output
3. Error: 'Expression syntax'
4. Error: 'Undeclared identifier if'

The correct form of if would be :
if ((x == 15) && (y == 20))
printf ( "Have a nice day\n");