View Compilation Error

0_0_17615119_15944.cpp: In function 'int main()':
0_0_17615119_15944.cpp:21:7: error: 'i' was not declared in this scope
   for(i=2;i<=6;i++)
       ^
0_0_17615119_15944.cpp:35:12: error: 'i' was not declared in this scope
        for(i=1;i<=6;i++)
            ^
0_0_17615119_15944.cpp:38:16: error: 'j' was not declared in this scope
            for(j=1;j<=w[i];j*=2)
                ^
0_0_17615119_15944.cpp:41:18: error: 'k' was not declared in this scope
              for(k=v;k>=cnt;k--)
                  ^