Procedure TForm1. Btn1Click (Sender: TObject); 
Var 
IntX1 intX2, intX: Int64; 
IntA intb.br deal, a steady, intD: Int64; 
The begin 
IntA:=256 * 256; 
Intb.br deal:=256 * 256; 
Id:=256 * 256; 
IntD:=256 * 255; 
IntX1:=intA * intb.br deal; 
IntX2: id=* intD; 
IntX:=intX1 * intX2; 
Showmessage (inttostr (intX)); 
end; 

CodePudding user response:

Results in excess of the 64 most dazheng integer ceiling, becomes negative
Please use type double

CodePudding user response:

Int64: is the largest integer in Delphi, a 64 - bit signed integer
Type Int64=- 9223372036854775808.. 9223372036854775807;
When data cross-border (& gt; 9223372036854775807), retain only after a 64 - bit data, false phenomenon,

Your IntX value is more than 9223372036854775807, the result of crossing the line is the appearance of a negative number,

CodePudding user response:

Exceeds the ceiling, round the whole well in negative territory,

CodePudding user response:

It is no use value is too large, with a Double

CodePudding user response:

7, 256, 1 255, seems to be 2 ^ 63 times, should be just enough,,,,,,,

CodePudding user response:

reference 5 floor sz_haitao reply:

7, 256, 1 255, seems to be 2 ^ 63 times, should be just enough,,,,,,,

It should be 7, 256, 1 128, is 2 ^ 63 times

CodePudding user response:

SSSSSD

refer to 6th floor sz_haitao response:

Quote: refer to the fifth floor sz_haitao reply:

7, 256, 1 255, seems to be 2 ^ 63 times, should be just enough,,,,,,,

Should be 7, 256, 1 128, is 2 ^ 63 times

7, 256, 1 128 show is negative

CodePudding user response:

Do you have any unsigned 64 - bit data type?

CodePudding user response:

The number 176892884410642042440,
Is greater than the maximum number of Int64, 9223372036854775807,

CodePudding user response:

Very modest, the results should be=18374686479671623680

CodePudding user response:

refer to 7th floor seleron response:

SSSSSD

Quote: refer to the sixth floor sz_haitao response:

Quote: refer to the fifth floor sz_haitao reply:

7, 256, 1 255, seems to be 2 ^ 63 times, should be just enough,,,,,,,

Should be 7, 256, 1 128, is 2 ^ 63 times

7, 256, 1 128 display is also negative

2 ^ 63-1 is the largest integer
More than 1, became a negative number

CodePudding user response:

11 references sz_haitao response:

Quote: refer to 7th floor seleron response:

SSSSSD

Quote: refer to the sixth floor sz_haitao response:

Quote: refer to the fifth floor sz_haitao reply:

7, 256, 1 255, seems to be 2 ^ 63 times, should be just enough,,,,,,,

Should be 7, 256, 1 128, is 2 ^ 63 times

7, 256, 1 128 display is also negative

2 ^ 63-1 is the largest integer
Become a negative number more than 1

Delphi the most-positive integer should be 2 ^ 32-1

CodePudding user response:

Wrong
Delphi is the most dazheng integer should be in 2 ^ 63-1

CodePudding user response:

How to said more than 9223372036854775807 in Delphi 2 ^ 63-1 number?

CodePudding user response:

On the 14th floor seleron

reference response:

how to represent in the Delphi is greater than the number 9223372036854775807 is 2 ^ 63-1?

Yourself or the third party to achieve any digits of the integer class,,,,

Seemed to go or python's built-in, probably the latter

CodePudding user response:

On the 14th floor seleron

reference response:

how to represent in the Delphi is greater than the number 9223372036854775807 is 2 ^ 63-1?

Two 64 - bit integer number,

CodePudding user response:

Compile, greater than 2 ^ 63-1 integer, can through the String character types, in the form of characters stored in the database, or two fields are saved: A field holds an integer 10 ^ 18 integer, B field holds more than 10 ^ 19 integers,

CodePudding user response:

UIntToStr

CodePudding user response:

With a uint64

CodePudding user response:

The

references the 19th floor DelphiGuy response:

with uint64

D7 haven't

But is only a big one,,,,

CodePudding user response:

For just enough of the building Lord,