![Pick A Number Between 1 And 3 Pick A Number Between 1 And 3](/uploads/1/2/4/1/124129734/398760794.png)
This mistakes keeps getting repeated again and again and again. The problem is that it feed of itself and is just so common around the web it is hard to iradicate. This is the standard anti-pattern for generating a random number in a range. There are two problems. 1) The bottom bits from rand are less random than the top bits (% basically uses the bottom bits). 2) Unless the divisor (3 in this case) is an exact factor of RANDMAX the last few values are slightly less probable than the other values (thus skewing your probability).–May 5 '11 at 7:00.
If you are generating random numbers from a very large base, most of the numbers are likely to be close to that base. E.g., if I ask for a random number between 1 and 1000, the possible results are: 1 number with 4 digits, 900 numbers with 3 digits, 90 numbers with 2 digits and 9 numbers with 1 digit. Pick a number. Between 1 and 10? Pick a number (ANY NUMBER) between 1 and 10? Answer Questions. What is the range of f^−1(x)? Given four coins. Each head gets $1. You can re-flip one coin after the initial four flips. What is the max you would pay to play this game?
Absolutely a better solution is to use Boost random number generator it was written by people who actually understand the problems associated with random numbers. Actually the solution I present (not mine) does solve the skew problem (notice it uses real numbers not integers). Also yes the bad random distribution of the bottom bits is an old problem that has been made better. But unless you know what rand is doing you can't tell if it has been solved in your variant of rand.
![Pick Pick](https://cdn.kastatic.org/ka-exercise-screenshots-3/types/xe4774e67ec955d00.png)
Thus it is more portable to air on the side of safety and write code that will work everywhere.–May 5 '11 at 7:52. Write a C program to generate 25 random numbers in the range 0 to 50. You should group them into categories using queue. The example of the output program as shown below:Output:Welcome to a demonstration of categorizing data.We generate 25 random numbers and then group them into categories using queues.Categorizing data:24 7 31 23 26 14 19 8 9 6 4316 22 0 39 46 22 38 41 3 41End of data categorizationData 0. 9: 7 8 9 6 0 3Data 10.19: 14 19 16 19 18 14Data 20.29: 24 23 26 22 22 23Data over 29: 31 43 39 46 38 41 41.
I'm not sure why Talmu deleted his answer, because I think it's correct and what I intended to say. If you want to be absolutely clear, you say 'between one and ten inclusive' or 'between one and ten exclusive'.The phrasing 'between X and Y' is ambiguous on whether the end-points are included. If you said, 'Al's scores were all between 8 and 10', I'd probably understand you to mean that he got some 8's, some 9's, and some 10's. But if you said, 'Al's score was between Betty's and Carl's', I'd think you meant higher than Betty's and lower than Carl's, and not that it might have been the same as one or the other. It all depends on context, and is often not clear.As others have noted, there are other phrasings that are not ambiguous.
Like if you said 'pick a number from 1 to 10', I think any English-speaker would assume that 1 and 10 are included in the range.