View Compilation Error

0_0_20072840_14935.cpp: In function 'int main()':
0_0_20072840_14935.cpp:41:5: error: expected initializer before 'int'
     int n;
     ^
0_0_20072840_14935.cpp:42:10: error: 'n' was not declared in this scope
     cin>>n;
          ^
0_0_20072840_14935.cpp:45:14: error: 'r' was not declared in this scope
         cin>>r;
              ^