Variable Types in MQL programming language - Singapore Forex Trading, Singapore Forex Academy, Singapore Forex Association

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Variable Types in MQL programming language

In MQL programming language, in variables, constants and functions following variable types are used.
int (integer) – It can only get integer values. 
int Art = 10;           // Integer variable sample
int B_27 = -1;          // Integer variable sample
int Num = 21;           // Integer variable sample
int Max = 2147483647;   // Integer variable sample
int Min = -2147483648;  // Integer variable sample

double (real number) – It is the type that decimal numbers can be define as.
double Art = 10.123;        // Real number variable sample
double B_27 = -1.0;         // Real number variable sample
double Num = 0.5;           // Real number variable sample
double MMM = -12.07;        // Real number variable sample
double Price_1 = 1.2756;    // Real number variable sample

bool (logic variable) – It is the variable that contains only true or false logic values
bool aa = True;     // Logic variable sample
bool B17 = TRUE;    // Logic variable sample
bool Hamma = 1;     // Logic variable sample
bool Asd = False;   // Logic variable sample
bool Nol = FALSE;   // Logic variable sample
bool Prim = 0;      // Logic variable sample

string (text) – It is the variable that contains text
string Prefix = "MetaTrader 4";             // String text variable
string Postfix = "_of_my_progr. OK";        // String text variable
string Name_Mass = "History";               // String text variable
string text = "Upper Line\nLower Line";     // String text variable new line character

color (color) – It is the variable that contains color
color Paint_1 = C'128,128,128';    // Gray color variable sample
color Colo = C'0x00,0x00,0xFF';    // Blue color variable sample
color BMP_4 = C'0xFF,0x33,0x00'    // Red color variable sample
color K_12 = 0xFF3300;             // Red color variable sample
color N_3 = 0x008000;              // Green color variable sample
color Color = 16777215;            // White color variable sample
color Alfa = 32768;                // Green color variable sample
color A = Red;                     // Red color variable sample
color B = Yellow;                  // Yellow color variable sample
color Colorit = Black;             // Black color variable sample
color B_21 = White;                // White color variable sample

datetime (date time) – It is the variable that contains date and time information
datetime Alfa = D'2004.01.01 00:00';      // New year
datetime Tim = D'01.01.2004';             // New year
datetime Tims = D'2005.05.12 16:30:45';   // May 12, 2005 16:30:45
datetime N_3 = D'12.05.2005 16:30:45';    // May 12, 2005 16:30:45
datetime Compile = D'';                   // Compile date D'[compilation date] 00:00:00'