Question

I need to write a program in C that does the following:

Write a program so that when the user enters a floating point number, it rounds off the number to 3 decimal places. When displaying the result, display 5 decimal places, and this means the 4th and 5th decimal place number will both be 0.

How do I round it to 3 decimal places and then display two zeroes? I am not allowed to use any sort of math library functions.

Answer 1

printf("%.5f\n",(int)(number*1000+0.5)/1000.0);