View Compilation Error

0_0_36561419_29565.cpp: In function 'int main()':
0_0_36561419_29565.cpp:17:7: error: 'i' was not declared in this scope
   for(i=0; i<=n; i++)
       ^
0_0_36561419_29565.cpp:18:17: error: 'j' was not declared in this scope
             for(j=1; j<=k; j++)
                 ^