percent

[codetojoy]

I just want to say that:

  if(1 <= relay && relay <= 5)
  {
     tax_rate = 1%;
  }

I don't need to compute a percentage; I just need to say for that
condition tax_rate = 1%; how do I express 1% so that the compiler
understands

[Norm Gunderson]

1% of 100 = 1.

0.01 * 100 = 1.

Thus:

  if(1 <= relay && relay <= 5)
  {
     tax_rate = 0.01;
  }

[codetojoy]

thanks

[boost lexical cast]

To convert back for other use:

std::cout << tax_rate * 100 << "%";