View Compilation Error

0_0_38827087_18156.cpp: In function 'int main()':
0_0_38827087_18156.cpp:5:37: error: 'amp' was not declared in this scope
    5 |         while(scanf("%lf%lf%lf%lf",&h,&u,&d,&f)==4)
      |                                     ^~~
0_0_38827087_18156.cpp:5:40: error: expected ')' before ';' token
    5 |         while(scanf("%lf%lf%lf%lf",&h,&u,&d,&f)==4)
      |              ~                         ^
      |                                        )
0_0_38827087_18156.cpp:5:44: error: 'amp' was not declared in this scope
    5 |         while(scanf("%lf%lf%lf%lf",&h,&u,&d,&f)==4)
      |                                            ^~~
0_0_38827087_18156.cpp:5:63: error: expected ';' before ')' token
    5 |         while(scanf("%lf%lf%lf%lf",&h,&u,&d,&f)==4)
      |                                                               ^
      |                                                               ;