In the case of negative numbers, rounding up means rounding a non-integer negative number to its next closest, more positive integer. For example, when rounding to the ones place, any non-integer value will be rounded up to the next highest integer, as shown below: 5.01 Rounding up, sometimes referred to as "taking the ceiling" of a number means rounding up towards the nearest integer. For example, when rounding to the ones place: -5.50 We agree here rounding half down can be thought of as rounding values that are halfway towards the smaller or more negative value. In the case of negative numbers, same as rounding half up, the definition is ambiguous. For example, when rounding to the ones place: 5.50 Rounding half down is similar to rounding half up, except that it means rounding values that are halfway between the chosen rounding precision down, rather than up. We agree here the "up" can be thought of as rounding values that are halfway towards the bigger or more positive value. When the value being rounded is negative, the definition is somewhat ambiguous. It means rounding values that are halfway between the chosen rounding precision up. This rounding method is one of the more common rounding methods used. All the rounding modes the calculator is capable of are described below. The calculator defaults to rounding to the nearest integer, but settings can be changed to use other rounding modes and levels of precision. There are various rounding definitions that can be used to round a number. For example, if rounding the number 2.7 to the nearest integer, 2.7 would be rounded to 3. Rounding a number involves replacing the number with an approximation of the number that results in a shorter, simpler, or more explicit representation of said number based on specific rounding definitions. If you have any doubts, please comment below.Click "Settings" to set the rounding method or define your own precision level. I tried my best to do it in the easiest way possible. Find the decimal part by dec=n-floor(n)Ĭ++ Program to round off numbers to their nearest 10th multiple #include Ĭout( You may Learn: Taking only integer input in C++ ) Algorithm: round off numbers nearest 10 in C++ If the decimal part is more than 0 then the number shall be rounded off to the next multiple of 10, if there is no decimal or is 0 then the number shall be decremented to the previous multiple of 10. Whereas if the last digit is 5 we will need to check if the decimal part is there or not. And then we check if the last digit is less than or more than 5, in both cases the number is either degraded or incremented to the previous or next multiple of ten. So for this, we will use the “floor” function to separate the decimal numbers from its integer part. So we will have to have a different approach here such that it satisfies all the cases. And also floating-point numbers will not be solved using this technique.įor example, if we enter 73.5 in a float variable and then divide it by 10 we will get 7.35 and again multiplying by 10 will give us the original number back (73.5). But this poses a problem as even 28 or 29 which is closer to 30 will give us 20 in this case. If we take a whole number which is not a multiple of 10 and store it in an integer data type which is not capable of storing decimal values, we would then be able to divide that by 10 and then again multiply it by 10 and that would give us the required multiple of 10.įor example, 23 divided by 10 gives us 2.3 but the integer can only hold 2 and then we multiply it by 10 to give us 20. Now it should be noted that the program should be self-sufficient to run on any inserted number be it a whole number or a number having a decimal point. And if we give and input of 35.8 the program will give an output of 40. This means if we enter the number 21 the program will give an output 20.
#ROUNDING NUMBERS IN PLANSWIFT 10 HOW TO#
This tutorial will show you how to round off numbers to their nearest 10th multiple in C++.
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