View Compilation Error

0_0_18821034_17780.cpp: In function 'int main()':
0_0_18821034_17780.cpp:62:9: error: too many arguments to function 'void init()'
   init(n);
         ^
0_0_18821034_17780.cpp:39:6: note: declared here
 void init()
      ^
0_0_18821034_17780.cpp:70:8: error: 'flag' was not declared in this scope
    if (flag && ans[i] == 0) continue;
        ^
0_0_18821034_17780.cpp:71:4: error: 'flag' was not declared in this scope
    flag = 0; printf("%d", ans[i]);
    ^
0_0_18821034_17780.cpp:73:7: error: 'flag' was not declared in this scope
   if (flag) printf("0");
       ^