Question about Printf and Cout (Sorry, EN isn't my mother language so I couldn't make a clearly tittle)

[eror404]

Hi guys!

I'm having an issue like these below examples:

Example:
I have a variable: x = 1.2345 and I want to output "x = 1.23" to the screen.
Therefore, in C, I have this code

  printf("x = %.2f", x);

Another example:
x = 1; y = 2; z = 3;
I want to output "1 2 3" to the screen.
So I use this C code:

  printf("%4d %4d %4d", x, y, z);

So the question is: "Is "cout" in C++ able to do the same? Syntax?"

Many thanks!
(I'm so sorry if my English is bad, because it is not my mother language)

[Peter87]

Yes, you can do the same thing with cout.

#include <cstdio>
#include <iostream>
#include <iomanip>

int main()
{
	{
		double x = 1.2345;
		
		std::printf("x = %.2f\n", x);
		std::cout << "x = " << std::fixed << std::setprecision(2) << x << '\n';
	}
	
	{
		int x = 1;
		int y = 2;
		int z = 3;
		
		std::printf("%4d %4d %4d\n", x, y, z);
		std::cout << std::setw(4) << x << ' ' 
		          << std::setw(4) << y << ' ' 
		          << std::setw(4) << z << '\n';
	}
}

http://www.cplusplus.com/reference/ios/fixed/
http://www.cplusplus.com/reference/iomanip/setprecision/
http://www.cplusplus.com/reference/iomanip/setw/