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string compare problom ,help me

string a; if (a== "" ) Alert ( "ok" ); if a equel empty, How do I write

What my easy code 's error,two value compare

Look last Code ,why the run ruzult is ok2 not ok3? double a= 4.0 ; double b= 4.5 ; if (a>b) Alert ( "ok1" ); if (a<b) Alert ( "ok2" ); if (a==b) Alert ( "ok3" ); double a= 4.0 ; int b= 4 ; if (a>b) Alert ( "ok1" ); if (a<b) Alert ( "ok2" );

How to use switch statement,What problom of my below code

switch (x) { case 1 : if (USD== 1 ) firstcurrent= 1 ; if (USD== 2 ) firstcurrent= 2 ; case 2 : if (EUR== 1 ) firstcurrent= 1 ; if (EUR== 2 ) firstcurrent= 2 ; case 3 : if (GBP== 1 )

syntax error dont disyplay arrow ,just display another icon,why ,plese help me thank you,

cal problom double type cal

double a=1.7; double b=1.6; double c=a-b; Alert(c); the result is 0.99999999999999999987

C++ ploblom, the front of "" is mean?

string a=( "" + TimeCurrent () + 100 + ";" ); I see have code like that written, what mean? I use FileWrite fuction put the code into xx.txt file,but I can't Read it use FileOpeN- FileReadNumber, I find the cause,possible is the number is oversize,I use WINDOUS XP systom,I Want to Read the

terminal 604 calculate problom

int c= 100 ; int d= 70 ; double a=d/c; Alert ( DoubleToStr (a, 8 )); output 0? why I English is very pool,thank your much fo help

prompt the synchronization failed, processing of trade actions disabled

How to solve the problom

help me,information local positions do not correspond to signal provider

How to solve the problem

what's meam of DOUBLE_VALUE?

<CODE REMOVED > handle = FileOpenHistory( Symbol () + Period () + ".hst" , FILE_BIN | FILE_READ ); bool GetPrices( int & PriceTime, int & PriceLow, int & PriceHigh) { PriceTime = FileReadInteger (handle); FileSeek (handle, DOUBLE_VALUE, SEEK_CUR ); PriceLow = FileReadDouble (handle) / Point +

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