View Compilation Error

0_0_34740412_21297.cpp: In function 'int main()':
0_0_34740412_21297.cpp:42:7: error: 'i' was not declared in this scope
   for(i=0;i<n;i++)
       ^
0_0_34740412_21297.cpp:57:7: error: 'i' was not declared in this scope
   for(i=1;i<=n;i++)
       ^