• Jabari Zakiya (22/22) Sep 09 I have this code to input integer values:
• Steven Schveighoffer (27/49) Sep 09 Given that you are just removing separators, just filter those
• Steven Schveighoffer (8/14) Sep 09 You can use separators using writefln:
• user1234 (18/40) Sep 09 About the input, see

Jabari Zakiya <jzakiya gmail.com> writes:

I have this code to input integer values:

```
   ulong[] x;
   foreach (_; 0 .. 2) { ulong a; readf!" %d"(a); x ~= a; }
   end_num = max(x[0], 3);
   start_num = max(x[1], 3);
   if (start_num > end_num) swap(start_num, end_num);
   start_num = start_num | 1;             // if start_num even add 
1
   end_num = (end_num - 1) | 1;           // if end_num even 
subtract 1
   if (end_num - start_num < 2) { start_num = 7; end_num = 7; }

```

Currently I have to enter data as:   123456 789102

I'd like to enter data as:  123_456 789_10

How do I do that?

Also for output, I do this:

```
writeln("total twins = ", twinscnt, "; last twin = ", last_twin - 
1, "+/-1");
```

I'd also like to output data as:  123,987 or 123_987

Steven Schveighoffer <schveiguy gmail.com> writes:

On Monday, 9 September 2024 at 20:02:48 UTC, Jabari Zakiya wrote:
 I have this code to input integer values:

 ```
   ulong[] x;
   foreach (_; 0 .. 2) { ulong a; readf!" %d"(a); x ~= a; }
   end_num = max(x[0], 3);
   start_num = max(x[1], 3);
   if (start_num > end_num) swap(start_num, end_num);
   start_num = start_num | 1;             // if start_num even 
 add 1
   end_num = (end_num - 1) | 1;           // if end_num even 
 subtract 1
   if (end_num - start_num < 2) { start_num = 7; end_num = 7; }

 ```

 Currently I have to enter data as:   123456 789102

 I'd like to enter data as:  123_456 789_10

 How do I do that?

 Also for output, I do this:

 ```
 writeln("total twins = ", twinscnt, "; last twin = ", last_twin 
 - 1, "+/-1");
 ```

 I'd also like to output data as:  123,987 or 123_987

Given that you are just removing separators, just filter those 
out from your inputs.

Just get the raw text as a string, and use `formattedRead` with 
an appropriate filtering range to get what you want.

Something like

```d
import std.string;
import std.algorithm;
import std.format;
import std.stdio;
auto str = readln(); // get the line
auto filtered = str.filter!(c => "_,".indexOf(c) == -1); // 
filter out separators
ulong[] x;
foreach(_; 0 .. 2) {ulong a; filtered.formattedRead(" %d", a); x 
~= a; }
```

And I'd also recommend trying out range chaining:

```d
ulong[] x = str
     .filter!(c => "_,".indexOf(c) == -1)
     .splitter
     .map!(s => s.to!ulong)
     .array;
```

-Steve

Steven Schveighoffer <schveiguy gmail.com> writes:

On Monday, 9 September 2024 at 20:02:48 UTC, Jabari Zakiya wrote:

 Also for output, I do this:

 ```
 writeln("total twins = ", twinscnt, "; last twin = ", last_twin 
 - 1, "+/-1");
 ```

 I'd also like to output data as:  123,987 or 123_987

You can use separators using writefln:

```d
writefln("%,d", 123987); // 123,987
writefln("%,?d", '_', 123987); // 123_987
```

See https://dlang.org/phobos/std_format.html

-Steve

user1234 <user1234 12.de> writes:

On Monday, 9 September 2024 at 20:02:48 UTC, Jabari Zakiya wrote:
 I have this code to input integer values:

 ```
   ulong[] x;
   foreach (_; 0 .. 2) { ulong a; readf!" %d"(a); x ~= a; }
   end_num = max(x[0], 3);
   start_num = max(x[1], 3);
   if (start_num > end_num) swap(start_num, end_num);
   start_num = start_num | 1;             // if start_num even 
 add 1
   end_num = (end_num - 1) | 1;           // if end_num even 
 subtract 1
   if (end_num - start_num < 2) { start_num = 7; end_num = 7; }

 ```

 Currently I have to enter data as:   123456 789102

 I'd like to enter data as:  123_456 789_10

 How do I do that?

 Also for output, I do this:

 ```
 writeln("total twins = ", twinscnt, "; last twin = ", last_twin 
 - 1, "+/-1");
 ```

 I'd also like to output data as:  123,987 or 123_987

About the input, see 
https://issues.dlang.org/show_bug.cgi?id=20568.
A remedy is to use a `myInputText.filter!(a => a != 
'_').to!int()` etc.

```d
import std;

void main(string[] args)
{
     // string[] inputs = args[1..$]; // let's not use stdin for 
now
     string[] inputs = ["123_456", "789_10"];
     auto filtered   = inputs.map!(i => i.filter!(n => n != '_'));
     auto values     = filtered.map!(f => f.to!int());
     writeln(values.array);
}
```

About the output I see someone just post the solution ;)