2.11 数据类型转换

将两种不同数据类型进行转换

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void OnStart()
{
 // 如果数据类型不一致,会报一个警告,不是错误
 double p = 3.1415926;
 int i = (int)p;

 // char -> int
 int i1 = (int)'a';
 // Print("i1的值: " + string(i1));
 // int -> char
 char c1 = (char)i1;
 // Print("i1的值: " + string(i1));

 // uchar -> uint
 uchar c2 = 'b';
 uint i2 = (uint)c2;
 // uint -> uchar
 uchar c2_copy = (uchar)i2;

 // double -> int 
 // 如果使用强制转换不会四舍五入
 double d1 = 3.9415926;
 int i3 = (int)d1;
 // Print("i3的值: " + string(i3));
 // int -> double
 int i4 = 100;
 double d2 = (double)i4;
 // Print("d2的值: " + string(d2));

 // color -> int
 color clr = clrAliceBlue;
 int i5 = (int)clr;
 // Print("i5的值: " + string(i5));
 // int -> color
 color clr2 = (color)i5;
 // Print("clr2的值: " + string(clr2));

 // datetime -> int
 datetime dt = D'2022.07.12 15:48:59';
 int dt_int = (int)dt;
 // Print("dt_int的值: " + string(dt_int));
 // int -> datetime
 datetime dt2 = (datetime)dt_int;
 // Print("dt2的值: " + string(dt2));

 // int, double,datetime,color -> string
 string str1 = (string)6666; // int
 string str2 = (string)3.141592; // double
 string str3 = (string)D'2022.07.12 15:48:59';
 // Print("str3的值: " + string(str3));
 string str4 = (string)clrRed; //color
 // Print("str4的值: " + string(str4));

 // string -> double
 double d_str = (double)"3.14.15926";
 Print("d_str的值: " + string(d_str));

}