View Compilation Error

0_0_15638119_6508.cpp: In function 'int main()':
0_0_15638119_6508.cpp:120:13: error: 'i' was not declared in this scope
         for(i=1;i<=9;i++)//判断列
             ^
0_0_15638119_6508.cpp:136:33: error: 'memset' was not declared in this scope
         memset(map,0,sizeof(map));
                                 ^