/in/foo.cc:9:11: error: stray '\342' in program
   f[i]=f[i−1]*(4*i−2)/(i+1);
           ^
/in/foo.cc:9:12: error: stray '\210' in program
   f[i]=f[i−1]*(4*i−2)/(i+1);
            ^
/in/foo.cc:9:13: error: stray '\222' in program
   f[i]=f[i−1]*(4*i−2)/(i+1);
             ^
/in/foo.cc:9:21: error: stray '\342' in program
   f[i]=f[i−1]*(4*i−2)/(i+1);
                     ^
/in/foo.cc:9:22: error: stray '\210' in program
   f[i]=f[i−1]*(4*i−2)/(i+1);
                      ^
/in/foo.cc:9:23: error: stray '\222' in program
   f[i]=f[i−1]*(4*i−2)/(i+1);
                       ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:9:14: error: expected ']' before numeric constant
   f[i]=f[i−1]*(4*i−2)/(i+1);
              ^
/in/foo.cc:9:14: error: expected ';' before numeric constant