View Compilation Error

0_0_30056633_11682.cpp: In function 'int main()':
0_0_30056633_11682.cpp:146:15: error: 'struct eight' has no member named 'x'
           sta.x=i%3;
               ^
0_0_30056633_11682.cpp:147:15: error: 'struct eight' has no member named 'y'
           sta.y=i/3;
               ^
0_0_30056633_11682.cpp:153:9: error: 'struct eight' has no member named 'x'
     fin.x=i%3;
         ^
0_0_30056633_11682.cpp:154:9: error: 'struct eight' has no member named 'y'
     fin.y=i/3;
         ^