View Compilation Error

0_0_19609665_10182.cpp: In function 'int main()':
0_0_19609665_10182.cpp:56:32: error: 'w_ans' was not declared in this scope
         printf("%.6lf %.6lf\n",w_ans,aver_ans);
                                ^
0_0_19609665_10182.cpp:56:38: error: 'aver_ans' was not declared in this scope
         printf("%.6lf %.6lf\n",w_ans,aver_ans);
                                      ^
0_0_19609665_10182.cpp: At global scope:
0_0_19609665_10182.cpp:58:5: error: expected unqualified-id before 'return'
     return 0;
     ^
0_0_19609665_10182.cpp:59:1: error: expected declaration before '}' token
 }
 ^