Output formatting

Hello,

Is it possible to tell cout that from now on, all output must be indented with n spaces?

For example:
cout << "blahblah" << indent(3) << endl;
cout << "abc" << endl;
cout << "123" << endl;

would output:

Code:

---

blahblah
  abc
  123

---

Not that I'm aware of.
You could have an object that generates a suitably indented string, e.g:

Code:

---

class Indent
{
private:
  unsigned int level;
public:
  Indent(int n = 0): level(n) {}
  ~Indent() {};
  void setLevel(int n) { level = n; };
  operator std:string()
  {
      return std::string(level, ' ');
  }
};

int main()
{
  Indent ind;

  std::cout << ind << "Hello, world" << std::endl;
  ind.setLevel(3);
  std::cout << ind << "abc" << std::endl;
  std::cout << ind << "123" << std::endl;
  return 0;
}

---

--
Mats

Thanks mats, but I need a method where the output producing code is unaware of the indents. I guess that's not possible.

How about replacing endl with a string? This could contain only '\n' or '\n' followed by a number of spaces.

Code:

---

#include <iostream>
#include <string>

int main()
{
    std::string newline("\n");
    std::string newline_plus_spaces = newline + std::string(3, ' ');
   
    std::string end_line = newline_plus_spaces;
    std::cout << "Hello, world" << end_line;  //next line is indented
    std::cout << "abc" << end_line;  //same
 
    end_line = newline;
    std::cout << "123" << end_line;  //next line is not indented
}

---