View Compilation Error

0_0_21109857_1520.cpp:8:11: error: '::main' must return 'int'
 void main()
           ^
0_0_21109857_1520.cpp: In function 'int main()':
0_0_21109857_1520.cpp:11:15: error: expected primary-expression at end of input
     scanf("%d", 
               ^
0_0_21109857_1520.cpp:11:15: error: expected '}' at end of input