类型转换的困惑

Question

int('13012341234')---好象数字太大了吧

Answer 1

Integer ?147483648..2147483647 signed 32-bit
Cardinal 0..4294967295 unsigned 32-bit
超过范围了

Answer 2

你的13012341234已经超出integer的范围了;
可用int64;
如
i:int64;
i:= StrToInt64('13012341234')+1;

Answer 3

float i=StrToFloat("13012341234");

Answer 4

double i=StrToFloat("13012341234");//调试通过

Answer 5

var x:int64;
    s:String;
begin
    s:='13012341234';
    x:=StrToInt64Def(s,0);
    ShowMessage(intToStr(x));
end;

Answer 6

var x:int64;  // 超长整数,OK!!!!!!!!!!!!!!!!!!!
    s:String;
begin
    s:='13012341234';
    x:=StrToInt64(s);
    ShowMessage(intToStr(x));
end;

Answer 7

StrToInt64('13012341234')可以。
我试过了。

Answer 8

8个字节的超长整数范围 
Int64 -2^63..2^63-1 signed 64-bit
十进制相当于20位十进制足够了

Answer 9

这int64可是巨无霸呀, 20位十进数字

Answer 10

-1152921504606846976 <=int64<= 1152921504606846975  var x:int64;
   s:string;
begin
    x:=$fffffffffffffff;   // Max 
    s:=intToStr(x);
    Edit1.Text:=s;
    ShowMessage(s);
end;