RATFOR syntax

A sample RATFOR program is

     @r
     @
     @a
     program main
     {
     integer k;
     real fcn, x;
     
     for(k=0; k<10; k++)
             {
             x = fcn(k);
     
             if(x < 0.0)
                     {
                     x = 0.0;
                     break;
                     }
             }
     }
     

The concluding brace of a function is translated into an END statement. Note the use of semicolons to terminate statements, braces to delimit compound statements, < instead of .LT., the C-like for construction, and the k++ expression.

Constructions like k++ or k -= l + 1 must be used with great care. They translate to statements involving = signs, so they can be used only where simple statements are allowed, not essentially anywhere as in C (for example, they cannot be used as function arguments).