View Compilation Error

0_0_13328062_4802.cpp:25:23: error: 'm' is not a type
     matrix operator *(m
                       ^
0_0_13328062_4802.cpp:25:23: error: expected ',' or '...' at end of input
0_0_13328062_4802.cpp:25:23: error: expected ')' at end of input
0_0_13328062_4802.cpp:25:23: error: expected ';' at end of member declaration
0_0_13328062_4802.cpp:25:23: error: expected '}' at end of input
0_0_13328062_4802.cpp:24:5: error: expected unqualified-id at end of input
     }
     ^