View Compilation Error

0_0_30866381_31477.cpp: In function 'int calc2(int, int, int)':
0_0_30866381_31477.cpp:54:12: error: expected primary-expression before '%' token
  while(k>0)%
            ^
0_0_30866381_31477.cpp:54:12: error: expected primary-expression at end of input
0_0_30866381_31477.cpp:54:12: error: expected '}' at end of input