View Compilation Error

0_0_27609927_9719.cpp:5:11: error: '::main' must return 'int'
 void main() 
           ^
0_0_27609927_9719.cpp: In function 'int main()':
0_0_27609927_9719.cpp:19:20: error: expected ';' at end of input
   scanf("%d",&a) ; printf
                    ^
0_0_27609927_9719.cpp:19:20: error: expected '}' at end of input
0_0_27609927_9719.cpp:19:20: error: expected '}' at end of input