How to use a variable as a parameter in a function that only suports constant expresssion

Question

I\'m using this function:

__delay_cycles(var); 

and I get the following error:

Argument to _delay_cycles

Answer 1

if(var==1)
  __delay_cycles(1);
else if(var==2)
  __delay_cycles(2);
else if(var==3)
  __delay_cycles(3);

...and so on.