Rounding doubles - .5 - sprintf

Question

I\'m using the following code for rounding to 2dp:

sprintf(temp,\"%.2f\",coef[i]); //coef[i] returns a double

It successfully rounds 6.666

Answer 1

You could also do this (saves multiply/divide):

printf("%.2f\n", coef[i] + 0.00049999);