Can I set variables to 1 decimal place?

Question

I am tinkering again and I have found some code online:

cout << fixed << setprecision(1)<< MyFloat;

but this only applies to that one instance at that one time.

Is there any way I can set a default in the programme so it knows to always use 1dp with these variables?

Thank you

Answer 1

Simply start your code with this :

cout.setf(ios::fixed);
cout.precision(1);

//Now its the default precision, one digit after the decimal, always, wont count significant digits...

// General -
stream_name.setf(ios::ios_flag_to_use);
stream_name.precision(default_precision_value);

Answer 2

see http://www.cplusplus.com/reference/ios/ios_base/precision/

Answer 3

Yeah, if you only need 1dp precision, just store the value as 1dp to your variable, instead of manipulating output for each time.

Answer 4

Thank you. that is great.