Run id: 121612

Main.cc: In function 'int main()':
Main.cc:11:9: error: 'sum' was not declared in this scope
         sum++;
         ^
Main.cc:15:9: error: 'sum' was not declared in this scope
         sum++;
         ^
Main.cc:19:9: error: 'sum' was not declared in this scope
         sum++;
         ^