round to two places in cpp code example

Example 1: get number round off to two decimal places c++

float a,b,c,d,sum;

 cin>>a>>b>>c>>d; // reading decimal values

sum=(a*b*c*d);

sum=round(sum*100)/100; // here it is for 2 decimal points

if((float)sum < (float) 9.58)
  cout<<"YES\n";
else
  cout<<"NO\n";

Example 2: round double to 2 decimal places c++

double d = 0.12345;
std::cout.precision(2); // for accuracy to 2 decimal places 
std::cout << d << std::endl; // 0.12