float setting decimal places

I am trying to find out when using float in a calculation how to set the number of decimal places. For example my code below

Code:

---

                                                                                                                                                                                #include stdio.h>
int main()
{
 float x=123.0;
 float y=69.0;
 float answer=y*x;
printf("the answer is %f\n",answer);
return(0);
}

---

This returns an answer 8487.0000 I would like it not to show all the decimal places. However if the sum has decimal places I would like to select the number of decimal places shown Thanks Rodney

read all about it here printf - C++ Reference

C and C++ are the same for this topic

Float setting decimal places - Dev Shed

Note, I don't think there is anything built in to printf that does exactly what you want, but you can use the * in the precision field, and give it either a 0 (no decimal places) or a positive value (e.g. 4) for how many decimal places you want displayed. The modff function will help you determine if there was a fractional part.