C code - 7 lines

Link:

C, pasted on Jul 5:

#include<stdio.h>
int main(){
 char str2[] = "hello";
 str2[] = "world";
 str2 = "world"; 
 return 1; 
}

Output:

1
2
3

In function 'main':
Line 4: error: expected expression before ']' token
Line 5: error: incompatible types in assignment