View Compilation Error

0_0_30732492_15550.cpp: In function 'int main()':
0_0_30732492_15550.cpp:15:8: error: 'i' was not declared in this scope
    for(i=1;i<n;i++)
        ^
0_0_30732492_15550.cpp:15:14: error: 'n' was not declared in this scope
    for(i=1;i<n;i++)
              ^