Formatting Numbers

[RNBW]

I have just started learning C++. I have used printf() with C in the past to format numbers. this doesn't seem to be favoured in modern C++.

I find using setw() and setprecision() seperately rather clumsy, particularly if you have a table with varying widths and precisions. I wondered if there was a way of combining them similar to printf(). I was thinking something along the lines of format(setw,setprecision).

Any comment will be appreciated.

[bird1234]

if you wanted to use c functions in c++ use this header file

#include<stdio.h>
[code]#include<iomanip> for setw() , setfill() etc ....
http://www.cplusplus.com/reference/cstdio/
http://www.cplusplus.com/reference/iomanip/?kw=iomanip

[gunnerfunner]

Width is not a sticky manipulator in C++ but precision is, so you can fix precision upto a particular point until you want to change it:

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
    cout<<setprecision(3);

    double x = 11.089, y = 3.329;

    cout << x << " " << y << '\n';
}

However it is not possible to do this for width but you can create a custom data-type that overloads << with a fixed width. I quite like the example here:
http://stackoverflow.com/questions/7248627/setting-width-in-c-output-stream
And you can add the degree of setprecision to this class and combine the two

[RNBW]

Thank you bird1234 and gunnerfunner for your responses. I know I can use printf() but it is a C function, which is quite flexible and I'm surprised it it's not replicated in some way. In my experience, the width of output and its precision usually go together. Being new to C++, I wondered if I was missing something, or if someone had written a function to replicate printf() our the print using in Basic.

I can live with it, but I just find it to be a surprising omission in C++ and its replacement to be somewhat clumsy.