View Compilation Error

0_0_36491102_18792.cpp:4:2: error: expected initializer before 'int'
  int h1,m1,s1,h2,m2,s2,n;
  ^
0_0_36491102_18792.cpp:5:7: error: expected constructor, destructor, or type conversion before '(' token
  scanf("%d",&n);
       ^
0_0_36491102_18792.cpp:6:2: error: expected unqualified-id before 'while'
  while(n--){
  ^