View Compilation Error

0_0_29090635_21042.cpp: In function 'int maxsum2(int (*)[111], int, int)':
0_0_29090635_21042.cpp:36:7: error: 'num' was not declared in this scope
  res2=num[1][1];//注意：这里不能令res2=0！！！ 
       ^