View Compilation Error

0_0_36905087_841.cpp: In function 'int main()':
0_0_36905087_841.cpp:9:6: error: 'sun' was not declared in this scope
   if(sun>0)cout<<1;
      ^
0_0_36905087_841.cpp:11:9: error: 'sun' was not declared in this scope
   while(sun--){
         ^