View Compilation Error

0_0_16796067_192.cpp: In function 'int main()':
0_0_16796067_192.cpp:9:3: error: 's' was not declared in this scope
   s
   ^
0_0_16796067_192.cpp:13:4: error: 'sum' was not declared in this scope
    sum+=j;
    ^
0_0_16796067_192.cpp:15:9: error: 'sum' was not declared in this scope
   cout<<sum<<endl;
         ^