if and if else command is the conditional statement is correct while writing it is range?

if T==300:900 c1=1.6; c2=1.7; elseif T==991:1500 C1=1.8; c2=1.9; else C1=0; c2=0; end

Answer 1

[Mischa Kim]

Anas,

 if (T >= 300) && (T <= 900)
     c1=1.6; c2=1.7;
 elseif (T > 900) && (T <= 1500)
     C1=1.8; c2=1.9;
 else
     C1=0; c2=0;
 end

Also, variable names are case sensitive. In other words, c1 is not the same as C1.

[Anas Rao]

Operands to the and && operators must be convertible to logical scalar values.

Error in entrainment_model (line 208) if (300<=tt)&& (tt<=999)

This is giving this error? Can you Please guide me how I remove this error?

[Mischa Kim]

I would need to see your entire code including input parameters. Can you attach?

[Anas Rao]

@Mischa Kim Thankyou. Your function works. I found mistake in my Program. Thanks a lot for your help.