# Random Number Genorator

Discussion in 'C' started by Sir D, May 22, 2005.

1. ### Sir DNew Member

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How do you make a random number genorator, in C++, between a set range?
Like 10-20?

<-)-{Sir D

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Hello

First of all I would like to Welcome you to this community of programmers.

Here is the code to do what you need
Code:
```int CWordsDlg::GetRandomNumer(int high,int low)
{
time_t SeedTime;
struct tm SeedDate;
SeedTime = time(0);
SeedDate = *localtime(&SeedTime);
int FinalSeed = (int)SeedTime + SeedDate.tm_mday + (SeedDate.tm_mon+1) + (SeedDate.tm_year+1900);
srand((unsigned int) FinalSeed);

int Interval = high - low + 1;
int RandomOffset = rand() % Interval;
int RandomNumber = low + RandomOffset;
return RandomNumber;
}

```
Its a fairly simple function which needs any explanation but then also if you need any just put a post here.

Thanks
Shabbir Bhimani

3. ### Sir DNew Member

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Thanks, but where do i imput my range numbers? Like 7-10?

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As a parameter to the function and it will give result output a random number between the parameter high and low.

5. ### Sir DNew Member

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It says 'CWordsDlg' has not been declared.

<-)-{Sir D

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Just remove that
Code:
```int GetRandomNumer(int high,int low)
{
time_t SeedTime;
struct tm SeedDate;
SeedTime = time(0);
SeedDate = *localtime(&SeedTime);
int FinalSeed = (int)SeedTime + SeedDate.tm_mday + (SeedDate.tm_mon+1) + (SeedDate.tm_year+1900);
srand((unsigned int) FinalSeed);

int Interval = high - low + 1;
int RandomOffset = rand() % Interval;
int RandomNumber = low + RandomOffset;
return RandomNumber;
}
```
As it was taken from my MFC Application that class name came up.

7. ### Sir DNew Member

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Errors:
Id returned 1 exit status

<-)-{Sir D