View Compilation Error

0_0_28477198_5000.cpp:1:6: error: expected constructor, destructor, or type conversion before '(' token
 scanf("%d",&a);
      ^
0_0_28477198_5000.cpp:2:6: error: expected constructor, destructor, or type conversion before '(' token
 scanf("%d",&b);
      ^
0_0_28477198_5000.cpp:3:7: error: expected constructor, destructor, or type conversion before '(' token
 printf("%d",a+b);
       ^