View Compilation Error

0_0_23107421_24898.cpp: In function 'int mian()':
0_0_23107421_24898.cpp:20:13: error: 'i' was not declared in this scope
         for(i = 0;i<n;i++)
             ^
0_0_23107421_24898.cpp:20:21: error: 'n' was not declared in this scope
         for(i = 0;i<n;i++)
                     ^