Rounding numbers

[strupan]

I am currently using this method.

#include <iostream>
#include <iomanip>
using namespace std;
int main(){
   double num = 12.456789;
   cout << num << '\n'; //Outputs 12.4568
   cout << fixed << num << '\n'; //Outputs 12.456789
   cout << setprecision(3) << fixed <<  num << '\n'; //Outputs 12.457
   return 0;
}

It work wonders but my class assignment requires me to use another body to display in the main. So this is what I have..

#include <iostream>
#include <iomanip>

int main()
{
  //Rounding 
   cout << setprecision(3) << fixed << Round(4.5268) << '\n'; 
   return 0;
}

int Round(float a)
{
	return a;
}

I know what I have is completely wrong but how do I make the int Round(float a) in the main making it round?

Thanks

[ModShop]

Your second piece of code should round the number, what seems to be the problem? To get standard rounding, try this function:

int Round(float a)
{
    return int(a+0.5);
}

[strupan]

Ohhhhhh

Jesus, I feel so stupid lol, thanks so much!

[strupan]

What about this?


int FunkyRound( float a );

// Rounds a to the nearest integer, but largest magnitude. i.e. -2.7 becomes -3, not -2.

[ModShop]

You would have to check specifically for negative numbers, if a number is negative you would subtract 0.5 instead of adding. That should work.