View Compilation Error

0_0_19091246_32255.cpp: In function 'int main()':
0_0_19091246_32255.cpp:17:2: error: 'sum2' was not declared in this scope
  sum2=sum*10.0;
  ^
0_0_19091246_32255.cpp:22:29: error: 'setprecision' was not declared in this scope
  cout<<fixed<<setprecision(1)<<<<endl;
                             ^
0_0_19091246_32255.cpp:22:32: error: expected primary-expression before '<<' token
  cout<<fixed<<setprecision(1)<<<<endl;
                                ^