View Compilation Error

0_0_21805817_9930.cpp: In function 'bool pan()':
0_0_21805817_9930.cpp:20:10: error: 'i' was not declared in this scope
     for (i=1;i<=n;i++)
          ^
0_0_21805817_9930.cpp:22:10: error: 'i' was not declared in this scope
     for (i=1;i<=n;i++)
          ^
0_0_21805817_9930.cpp:24:10: error: 'i' was not declared in this scope
     for (i=1;i<=n;i++)
          ^
0_0_21805817_9930.cpp:83:10: error: 'i' was not declared in this scope
     for (i=1;i<=n;i++)
          ^
0_0_21805817_9930.cpp:85:10: error: 'i' was not declared in this scope
     for (i=1;i<=n;i++)
          ^
0_0_21805817_9930.cpp:87:10: error: 'i' was not declared in this scope
     for (i=1;i<=n;i++)
          ^