need help separating a real number

[jorgejags]

ok

its for a programming C class not sure how to do this so whoever can lend a hand i'll appreciate it. here is the assignment.


Write a program that takes a real number as input and prints out the
integer and fractional part.

Example: If the input is 16.343, the output should say:

The integer part is 16 and the fractional part is 0.343.

[zacs7]

The power of casting! Assuming your CPU/Compiler truncates instead of rounds (AFAIK some compilers give the option to round).

Then,

float real = 16.343;
int integerPart = (int) real;
float fractionalPart = real - (float)integerPart;

Or something, there are many other ways to do it though...

[matsp]

float fractionalPart = real - (float)integerPart;

The cast is not needed, as real is a float already, and that will promote both sides to float.

I'm 99.9% sure that this will work on all compilers that follow the C standard.

--
Mats

[QuantumPete]

I'm 99.9% sure that this will work on all compilers that follow the C standard.

And according to Sod's Law, your lecturer will have a compiler that falls into the 0.1% bracket.

QuantumPete

[Salem]

Easy - http://www.rt.com/man/modf.3.html