View Compilation Error

0_0_30535558_30260.cpp:6:11: error: '::main' must return 'int'
 void main()
           ^
0_0_30535558_30260.cpp: In function 'int main()':
0_0_30535558_30260.cpp:40:5: error: return-statement with no value, in function returning 'int' [-fpermissive]
     return;
     ^