View Compilation Error

0_0_34608575_6660.cpp:13:11: error: '::main' must return 'int'
 void main()
           ^
0_0_34608575_6660.cpp: In function 'int main()':
0_0_34608575_6660.cpp:18:8: error: expected '}' at end of input
   sum=0;
        ^
0_0_34608575_6660.cpp:18:8: error: expected '}' at end of input