C++ float and double Using setprecision() For Floating-Point Numbers
#include <iomanip>
#include <iostream>
using namespace std;
int main() {
// Creating a double type variable
double a = 3.912348239293;
// Creating a float type variable
float b = 3.912348239293f;
// Setting the precision to 12 decimal places
cout << setprecision(13);
// Printing the two variables
cout << "Double Type Number = " << a << endl;
cout << "Float Type Number = " << b << endl;
return 0;
}