View Compilation Error

0_0_34237636_11429.cpp: In function 'int main()':
0_0_34237636_11429.cpp:27:12: error: 'len' was not declared in this scope
            len =s.length();
            ^
0_0_34237636_11429.cpp:28:12: error: 'b' was not declared in this scope
            b=s[len-1]-48
            ^
0_0_34237636_11429.cpp:30:4: error: 'else' without a previous 'if'
    else after=after+(10-b)*0.001;
    ^
0_0_34237636_11429.cpp: At global scope:
0_0_34237636_11429.cpp:34:5: error: expected unqualified-id before 'return'
     return 0;
     ^
0_0_34237636_11429.cpp:35:1: error: expected declaration before '}' token
 }
 ^