3.3.2.30 If

If-cmd

Syntax:

if (testCondition) sentencel; [else sentence2;]

if (testCondition) (script1) [else (script2)]

Evaluate testCondition and if true, execute script1. Expressions without conditional operators are considered true if the result of the expression is non-zero.

If the optional else is present and testCondition is false (zero), then execute script2. There should be a space after the else. Strings should be quoted and string comparisons are not case sensitive.

Single statement script arguments should end with a semicolon. Multiple statement script arguments must be surrounded by braces {}. Each statement within the braces should end with a semicolon. It is not necessary to follow the final brace of a script with a semicolon.

Examples:

The following script opens a message box displaying "Yes!".

%M = test;
if (%M == "TEST")  type -b "Yes!";

If a graph window is active, this script opens a message box displaying, "A graph is active"; if a worksheet is active, a message box opens with "A worksheet is active".

if(exist(%H)==3)
      type -b "A graph is active";
else
      if(exist(%H)==2)
            type -b "A worksheet is active";

The next script finds the first point in data1_a that is greater than 100.

ii = 1; 
{
if (data1_a[ii] > 100)  break;  
else  ii++; // this semicolon ends the if-else statement
};
if (ii != $(numPoints + 1)) 
      {
            type -b "The index number of first value >100 is $(ii)";  
            type "first value > 100 is $(data1_a[ii])" ;
      }

See Also:

Break (command), Switch (command)

Continue (command), Document (command), Exit (command), For (command), Loop (command), Repeat (command)