View Compilation Error

0_0_33595745_16687.cpp: In function 'int main()':
0_0_33595745_16687.cpp:6:10: error: 'init' was not declared in this scope
     init();int k;
          ^
0_0_33595745_16687.cpp:9:12: error: 'n' was not declared in this scope
         if(n&1)  putchar('0'),putchar('\0'); 
            ^