View Compilation Error

1_868_2421_28286.cpp: In function 'int main()':
1_868_2421_28286.cpp:30:37: error: 'm' was not declared in this scope
         memset(book,0,sizeof(book));m
                                     ^
1_868_2421_28286.cpp:31:21: error: 'i' was not declared in this scope
         for(int i=1;i<=n;i++)
                     ^