Convert from double to cstring

Question

1.00/5 (2 votes)

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I have this number:

46.71438243077313

and I want to convert in cstring
I tried:

rend.Format(_T("%.2f", 46.71438243077313));

but it doesn't work

What I have tried:

I searched in internet and I have tried everything..but it doesn't work..I don't know..the result is always 0.000000

Posted 21-Oct-19 3:37am

Member 14594285

Updated 21-Oct-19 3:47am

v2

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OriginalGriff · Answer 1 · 2019-10-21T03:47:00

Solution 1

Try:

C++

CString str;
str.Format(_T("%.2f"), 46.71438243077313);

Quote:
it doesn't work

Quote:
the result is 0.00

And how - exactly - did you check that? What code did you use? Because when I try it:

C++

#include <iostream>
#include <atlstr.h>

int main()
{
    std::cout << "Hello, world!\n";
    CString str;
    str.Format(_T("%.2f"), 46.71438243077313);
    std::cout<< str;
}

I get this:

Quote:
/LIBPATH:C:\boost_1_60_0\stage\lib
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.23506 for x64
Hello, world!
46.71

Which is what I expect...

Posted 21-Oct-19 3:47am

OriginalGriff

Updated 21-Oct-19 4:26am

v3

Comments

Member 14594285 21-Oct-19 9:58am

it doesn't work

OriginalGriff 21-Oct-19 10:00am

"it doesn't work" is one of the most common problem reports we get here.
It's also the most useless, because it tells us nothing at all about what your problem actually is.

And we don't know, because we can't see your screen, we can't access your HDD, and we can't read your mind.
So explain it to us: tell us what you did to cause the problem. Tell us what happened when you did that. Show us any error messages, show us which line it occurred on if you can.

But "it doesn't work" tells us absolutely nothing.

Member 14594285 21-Oct-19 10:07am

the result is 0.00

OriginalGriff 21-Oct-19 10:26am

ANswer updated.

Member 14594285 21-Oct-19 10:56am

my result is always 0.00

OriginalGriff 21-Oct-19 10:59am

At the risk of repeating myself...

"And how - exactly - did you check that? What code did you use?"

Member 14594285 21-Oct-19 11:04am

rend.Format(_T("%.2f", 46.71438243077313));

OriginalGriff 21-Oct-19 11:10am

Is there any point at all in my typing, if you are just going to ignore what I say and do what you think will work?

Go back, read the code in my solution above, and compare that to teh code you just showed ...

Member 14594285 21-Oct-19 11:13am

my code it's the same of your and my result is 0.00, I don't see differences

Member 14594285 21-Oct-19 11:14am

now it works, thanks