@{
    nTimes     = `constant  10;
    forLoop    = (`statement for (int i = 0;  i < 10;  ++i) printf("%d\n", i););
    whileLoop  = `statement while (i < 10) { printf("%d\n", i);  ++il; };
    useForLoop = 1;
}

int main()
{ 
    @{
      if (useForLoop) { 
        @@.append(forLoop);
      } else { 
        @@.append(whileLoop); 
      }
      @@;
    };
    return 0;
}