However, in most cases, float and double seem to be interchangeable, i.e That would be exactly last on my list of considerations Using one or the other does not seem to affec.
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A double typically provides 16 (±1) decimal digits
4 8 12 16 v v v v 0.947368421052631578 long double 0.947368421052631526 double the answers agree to 16 digits
This is what should be expected Also, note that there's no guarantee in the c standard that a long double has more precision than a double The last decimal digit (16th or 17th) is not necessarily accurate. When should i use double instead of decimal
Has some similar and more in depth answers In my earlier question i was printing a double using cout that got rounded when i wasn't expecting it How can i make cout print a double using full precision? 494 a double is not an integer, so the cast won't work
Note the difference between the double class and the double primitive
Also note that a double is a number, so it has the method intvalue, which you can use to get the value as a primitive int. The double not in this case is quite simple It is simply two not s back to back The first one simply inverts the truthy or falsy value, resulting in an actual boolean type, and then the second one inverts it back again to its original state, but now in an actual boolean value
That way you have consistency: Long double vs double i am new to programming and i am unable to understand the difference between between long double and double in c and c++ I tried to google it but was unab. 5 double& is just a double passed by reference
In vb.net, it would be declared byref dec_deg as double
However, i would recommend instead of using a void function to set a value by reference, just change the return type to double and return the expression instead of having to pass a variable by reference. A double has a much higher precision due to it's difference in size If the numbers you are using will commonly exceed the value of a float, then use a double Several other people have mentioned performance isssues
