View Compilation Error

0_0_39049327_29012.cpp: In function 'int main()':
0_0_39049327_29012.cpp:9:16: error: 'setprecision' was not declared in this scope
    9 |   cout<<fixed<<setprecision(3)<<fabs(a)<<endl;
      |                ^~~~~~~~~~~~
0_0_39049327_29012.cpp:3:1: note: 'std::setprecision' is defined in header '<iomanip>'; did you forget to '#include <iomanip>'?
    2 | #include<math.h>
  +++ |+#include <iomanip>
    3 | using namespace std;