您需要输出ANSI颜色代码。注意，并非所有终端都支持此功能;如果不支持颜色序列，就会显示垃圾。

例子:

 cout << "\033[1;31mbold red text\033[0m\n";

这里，\033是ESC字符，ASCII 27。它后面跟着[，然后是0个或多个用;隔开的数字，最后是字母m。这些数字描述了从这一点开始切换的颜色和格式。

前景色和背景色的代码如下:

         foreground background
black        30         40
red          31         41
green        32         42
yellow       33         43
blue         34         44
magenta      35         45
cyan         36         46
white        37         47

此外，你可以使用这些:

reset             0  (everything back to normal)
bold/bright       1  (often a brighter shade of the same colour)
underline         4
inverse           7  (swap foreground and background colours)
bold/bright off  21
underline off    24
inverse off      27

有关其他不太受广泛支持的代码，请参见维基百科上的表格。

---

要确定您的终端是否支持颜色序列，请读取TERM环境变量的值。它应该指定所使用的特定终端类型(例如vt100、gnome-terminal、xterm、screen……)。然后在terminfo数据库中查找;检查颜色能力。

你可以使用转义序列，如果你的终端支持的话。例如:

echo \[\033[32m\]Hello, \[\033[36m\]colourful \[\033[33mworld!\033[0m\]

最好的方法是使用ncurses库——尽管如果你只是想输出一个简单的彩色字符串，这可能是一个大锤来敲坚果

在你输出任何你需要的颜色之前，确保你在一个终端:

[ -t 1 ] && echo 'Yes I am in a terminal'  # isatty(3) call in C

然后你需要检查终端能力，如果它支持颜色

在使用terminfo(基于Linux)的系统上，您可以获得支持的颜色数量为

Number_Of_colors_Supported=$(tput colors)

在使用termcap(基于BSD)的系统上，您可以获得支持的颜色数量为

Number_Of_colors_Supported=$(tput Co)

然后做出决定:

[ ${Number_Of_colors_Supported} -ge 8 ] && {
    echo 'You are fine and can print colors'
} || {
    echo 'Terminal does not support color'
}

---

顺便说一下，不要像之前建议的那样使用ESC字符着色。 使用标准的终端调用功能，将为您指定特定终端支持的正确颜色。

BSD Based

fg_black="$(tput AF 0)"
fg_red="$(tput AF 1)"
fg_green="$(tput AF 2)"
fg_yellow="$(tput AF 3)"
fg_blue="$(tput AF 4)"
fg_magenta="$(tput AF 5)"
fg_cyan="$(tput AF 6)"
fg_white="$(tput AF 7)"
reset="$(tput me)"

Linux Based

fg_black="$(tput setaf 0)"
fg_red="$(tput setaf 1)"
fg_green="$(tput setaf 2)"
fg_yellow="$(tput setaf 3)"
fg_blue="$(tput setaf 4)"
fg_magenta="$(tput setaf 5)"
fg_cyan="$(tput setaf 6)"
fg_white="$(tput setaf 7)"
reset="$(tput sgr0)"

Use As

echo -e "${fg_red}  Red  ${fg_green} Bull ${reset}"

这是一个老主题，但我编写了一个类，其中包含嵌套子类和由简单C宏定义的颜色静态成员。

我在dreamincode.net中通过用户no2pencil从这篇文章中获得了颜色函数。

我这样做是为了能够像这样使用std::cout流中的静态常量:

cout << zkr::cc::fore::red << "This is red text. " 
     << zkr::cc::console << "And changing to console default colors, fg, bg."
     << endl;

类和测试程序的源代码可以在这里下载。

cc::console将重置为控制台默认颜色和属性，cc::underline将为文本下划线，这在putty上工作，我已经测试了测试程序。

颜色:

black
blue
red
magenta
green
cyan
yellow
white

lightblack
lightblue
lightred
lightmagenta
lightgreen
lightcyan
lightyellow
lightwhite

它可以用于cc静态类的前静态和后静态子类。

编辑2017

为了更实用，我在这里添加了类代码。

颜色代码宏:

#define CC_CONSOLE_COLOR_DEFAULT "\033[0m"
#define CC_FORECOLOR(C) "\033[" #C "m"
#define CC_BACKCOLOR(C) "\033[" #C "m"
#define CC_ATTR(A) "\033[" #A "m"

main color函数定义屏幕的颜色或属性:

char *cc::color(int attr, int fg, int bg)
{
    static char command[13];

    /* Command is the control command to the terminal */
    sprintf(command, "%c[%d;%d;%dm", 0x1B, attr, fg + 30, bg + 40);
    return command;
}

ccolor.h

#include <stdio.h>

#define CC_CONSOLE_COLOR_DEFAULT "\033[0m"
#define CC_FORECOLOR(C) "\033[" #C "m"
#define CC_BACKCOLOR(C) "\033[" #C "m"
#define CC_ATTR(A) "\033[" #A "m"

namespace zkr
{
    class cc
    {
    public:

        class fore
        {
        public:
            static const char *black;
            static const char *blue;
            static const char *red;
            static const char *magenta;
            static const char *green;
            static const char *cyan;
            static const char *yellow;
            static const char *white;
            static const char *console;

            static const char *lightblack;
            static const char *lightblue;
            static const char *lightred;
            static const char *lightmagenta;
            static const char *lightgreen;
            static const char *lightcyan;
            static const char *lightyellow;
            static const char *lightwhite;
        };

        class back
        {
        public:
            static const char *black;
            static const char *blue;
            static const char *red;
            static const char *magenta;
            static const char *green;
            static const char *cyan;
            static const char *yellow;
            static const char *white;
            static const char *console;

            static const char *lightblack;
            static const char *lightblue;
            static const char *lightred;
            static const char *lightmagenta;
            static const char *lightgreen;
            static const char *lightcyan;
            static const char *lightyellow;
            static const char *lightwhite;
        };

        static char *color(int attr, int fg, int bg);
        static const char *console;
        static const char *underline;
        static const char *bold;
    };
}

ccolor.cpp

#include "ccolor.h"

using namespace std;

namespace zkr
{
    enum Color
    {
        Black,
        Red,
        Green,
        Yellow,
        Blue,
        Magenta,
        Cyan,
        White,
        Default = 9
    };

    enum Attributes
    {
        Reset,
        Bright,
        Dim,
        Underline,
        Blink,
        Reverse,
        Hidden
    };

    char *cc::color(int attr, int fg, int bg)
    {
        static char command[13];
        /* Command is the control command to the terminal */
        sprintf(command, "%c[%d;%d;%dm", 0x1B, attr, fg + 30, bg + 40);
        return command;
    }

    const char *cc::console = CC_CONSOLE_COLOR_DEFAULT;
    const char *cc::underline = CC_ATTR(4);
    const char *cc::bold = CC_ATTR(1);

    const char *cc::fore::black = CC_FORECOLOR(30);
    const char *cc::fore::blue = CC_FORECOLOR(34);
    const char *cc::fore::red = CC_FORECOLOR(31);
    const char *cc::fore::magenta = CC_FORECOLOR(35);
    const char *cc::fore::green = CC_FORECOLOR(92);
    const char *cc::fore::cyan = CC_FORECOLOR(36);
    const char *cc::fore::yellow = CC_FORECOLOR(33);
    const char *cc::fore::white = CC_FORECOLOR(37);
    const char *cc::fore::console = CC_FORECOLOR(39);

    const char *cc::fore::lightblack = CC_FORECOLOR(90);
    const char *cc::fore::lightblue = CC_FORECOLOR(94);
    const char *cc::fore::lightred = CC_FORECOLOR(91);
    const char *cc::fore::lightmagenta = CC_FORECOLOR(95);
    const char *cc::fore::lightgreen = CC_FORECOLOR(92);
    const char *cc::fore::lightcyan = CC_FORECOLOR(96);
    const char *cc::fore::lightyellow = CC_FORECOLOR(93);
    const char *cc::fore::lightwhite = CC_FORECOLOR(97);

    const char *cc::back::black = CC_BACKCOLOR(40);
    const char *cc::back::blue = CC_BACKCOLOR(44);
    const char *cc::back::red = CC_BACKCOLOR(41);
    const char *cc::back::magenta = CC_BACKCOLOR(45);
    const char *cc::back::green = CC_BACKCOLOR(42);
    const char *cc::back::cyan = CC_BACKCOLOR(46);
    const char *cc::back::yellow = CC_BACKCOLOR(43);
    const char *cc::back::white = CC_BACKCOLOR(47);
    const char *cc::back::console = CC_BACKCOLOR(49);

    const char *cc::back::lightblack = CC_BACKCOLOR(100);
    const char *cc::back::lightblue = CC_BACKCOLOR(104);
    const char *cc::back::lightred = CC_BACKCOLOR(101);
    const char *cc::back::lightmagenta = CC_BACKCOLOR(105);
    const char *cc::back::lightgreen = CC_BACKCOLOR(102);
    const char *cc::back::lightcyan = CC_BACKCOLOR(106);
    const char *cc::back::lightyellow = CC_BACKCOLOR(103);
    const char *cc::back::lightwhite = CC_BACKCOLOR(107);
}

在OSX shell上，这为我工作(包括“红色文本”前面的2个空格):

$ printf "\e[033;31m  red text\n"
$ echo "$(tput setaf 1)  red text"

基础知识

我写了一个c++类，可以用来设置输出的前景色和背景色。这个示例程序用作打印This ->单词<-是红色的示例。格式化它，使单词的前景色为红色。

#include "colormod.h" // namespace Color
#include <iostream>
using namespace std;
int main() {
    Color::Modifier red(Color::FG_RED);
    Color::Modifier def(Color::FG_DEFAULT);
    cout << "This ->" << red << "word" << def << "<- is red." << endl;
}

源

#include <ostream>
namespace Color {
    enum Code {
        FG_RED      = 31,
        FG_GREEN    = 32,
        FG_BLUE     = 34,
        FG_DEFAULT  = 39,
        BG_RED      = 41,
        BG_GREEN    = 42,
        BG_BLUE     = 44,
        BG_DEFAULT  = 49
    };
    class Modifier {
        Code code;
    public:
        Modifier(Code pCode) : code(pCode) {}
        friend std::ostream&
        operator<<(std::ostream& os, const Modifier& mod) {
            return os << "\033[" << mod.code << "m";
        }
    };
}

先进的

您可能希望向该类添加其他特性。它是，例如，可以添加颜色洋红色，甚至样式像粗体。要做到这一点，只需在Code枚举中添加另一个条目。这是一个很好的参考。

试试我的标题这里一个快速和简单的方法来着色文本:Aedi的颜色标题

Escape-Sequence-Color-Header

在Unix中使用c++为输出着色!!

文本属性选项:

ATTRIBUTES_OFF, BOLD, UNDERSCORE, BLINK, REVERSE_VIDEO, CONCEALED

颜色选择:

BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE

格式:

通用格式，在$变量$中包含你想要的值

COLOR_$Foreground_Color$_$Background_Color$
COLOR_$Text_Attribute$_$Foreground_Color$_$Background_Color$
COLOR_NORMAL  // To set color to default

e.g.

COLOR_BLUE_BLACK // Leave Text Attribute Blank if no Text Attribute appied
COLOR_UNDERSCORE_YELLOW_RED
COLOR_NORMAL

用法:

只是使用流的颜色，你想在输出文本和 在输出文本后再次使用以将颜色设置为正常。

cout << COLOR_BLUE_BLACK << "TEXT" << COLOR_NORMAL << endl;
cout << COLOR_BOLD_YELLOW_CYAN << "TEXT" << COLOR_NORMAL << endl;

正如其他人所述，您可以使用转义字符。 你可以使用我的标题，以使它更容易:

#ifndef _COLORS_
#define _COLORS_

/* FOREGROUND */
#define RST  "\x1B[0m"
#define KRED  "\x1B[31m"
#define KGRN  "\x1B[32m"
#define KYEL  "\x1B[33m"
#define KBLU  "\x1B[34m"
#define KMAG  "\x1B[35m"
#define KCYN  "\x1B[36m"
#define KWHT  "\x1B[37m"

#define FRED(x) KRED x RST
#define FGRN(x) KGRN x RST
#define FYEL(x) KYEL x RST
#define FBLU(x) KBLU x RST
#define FMAG(x) KMAG x RST
#define FCYN(x) KCYN x RST
#define FWHT(x) KWHT x RST

#define BOLD(x) "\x1B[1m" x RST
#define UNDL(x) "\x1B[4m" x RST

#endif  /* _COLORS_ */

使用header的宏的一个例子可以是:

#include <iostream>
#include "colors.h"
using namespace std;

int main()
{
    cout << FBLU("I'm blue.") << endl;
    cout << BOLD(FBLU("I'm blue-bold.")) << endl;
    return 0;
}

我使用下面的解决方案，它非常简单和优雅，可以很容易地粘贴到源代码中，并在Linux/Bash上工作:

const std::string red("\033[0;31m");
const std::string green("\033[1;32m");
const std::string yellow("\033[1;33m");
const std::string cyan("\033[0;36m");
const std::string magenta("\033[0;35m");
const std::string reset("\033[0m");

std::cout << "Measured runtime: " << yellow << timer.count() << reset << std::endl;

你可以使用ANSI颜色代码。

使用这些函数。

enum c_color{BLACK=30,RED=31,GREEN=32,YELLOW=33,BLUE=34,MAGENTA=35,CYAN=36,WHITE=37};
enum c_decoration{NORMAL=0,BOLD=1,FAINT=2,ITALIC=3,UNDERLINE=4,RIVERCED=26,FRAMED=51};
void pr(const string str,c_color color,c_decoration decoration=c_decoration::NORMAL){
  cout<<"\033["<<decoration<<";"<<color<<"m"<<str<<"\033[0m";
}

void prl(const string str,c_color color,c_decoration decoration=c_decoration::NORMAL){
   cout<<"\033["<<decoration<<";"<<color<<"m"<<str<<"\033[0m"<<endl;
}

从我的理解，一个典型的ANSI颜色代码

"\033[{FORMAT_ATTRIBUTE};{FORGROUND_COLOR};{BACKGROUND_COLOR}m{TEXT}\033[{RESET_FORMATE_ATTRIBUTE}m"

由(名称和编解码器)组成

FORMAT ATTRIBUTE { "Default", "0" }, { "Bold", "1" }, { "Dim", "2" }, { "Italics", "3"}, { "Underlined", "4" }, { "Blink", "5" }, { "Reverse", "7" }, { "Hidden", "8" } FORGROUND COLOR { "Default", "39" }, { "Black", "30" }, { "Red", "31" }, { "Green", "32" }, { "Yellow", "33" }, { "Blue", "34" }, { "Magenta", "35" }, { "Cyan", "36" }, { "Light Gray", "37" }, { "Dark Gray", "90" }, { "Light Red", "91" }, { "Light Green", "92" }, { "Light Yellow", "93" }, { "Light Blue", "94" }, { "Light Magenta", "95" }, { "Light Cyan", "96" }, { "White", "97" } BACKGROUND COLOR { "Default", "49" }, { "Black", "40" }, { "Red", "41" }, { "Green", "42" }, { "Yellow", "43" }, { "Blue", "44" }, { "Megenta", "45" }, { "Cyan", "46" }, { "Light Gray", "47" }, { "Dark Gray", "100" }, { "Light Red", "101" }, { "Light Green", "102" }, { "Light Yellow", "103" }, { "Light Blue", "104" }, { "Light Magenta", "105" }, { "Light Cyan", "106" }, { "White", "107" } TEXT RESET FORMAT ATTRIBUTE { "All", "0" }, { "Bold", "21" }, { "Dim", "22" }, { "Underlined", "24" }, { "Blink", "25" }, { "Reverse", "27" }, { "Hidden", "28" }

有了这些信息，就很容易给字符串“I am a banana!”上色，前景色为“黄色”，背景色为“绿色”，就像这样

"\033[0;33;42mI am a Banana!\033[0m"

或者用c++库着色

auto const& colorized_text = color::rize( "I am a banana!", "Yellow", "Green" );
std::cout << colorized_text << std::endl;

更多关于FORMAT ATTRIBUTE的例子

gon1332头文件的扩展版本:

//
//  COLORS.h
//
//  Posted by Gon1332 May 15 2015 on StackOverflow
//  https://stackoverflow.com/questions/2616906/how-do-i-output-coloured-text-to-a-linux-terminal#2616912
//
//  Description: An easy header file to make colored text output to terminal second nature.
//  Modified by Shades Aug. 14 2018

// PLEASE carefully read comments before using this tool, this will save you a lot of bugs that are going to be just about impossible to find.
#ifndef COLORS_h
#define COLORS_h

/* FOREGROUND */
// These codes set the actual text to the specified color
#define RESETTEXT  "\x1B[0m" // Set all colors back to normal.
#define FOREBLK  "\x1B[30m" // Black
#define FORERED  "\x1B[31m" // Red
#define FOREGRN  "\x1B[32m" // Green
#define FOREYEL  "\x1B[33m" // Yellow
#define FOREBLU  "\x1B[34m" // Blue
#define FOREMAG  "\x1B[35m" // Magenta
#define FORECYN  "\x1B[36m" // Cyan
#define FOREWHT  "\x1B[37m" // White

/* BACKGROUND */
// These codes set the background color behind the text.
#define BACKBLK "\x1B[40m"
#define BACKRED "\x1B[41m"
#define BACKGRN "\x1B[42m"
#define BACKYEL "\x1B[43m"
#define BACKBLU "\x1B[44m"
#define BACKMAG "\x1B[45m"
#define BACKCYN "\x1B[46m"
#define BACKWHT "\x1B[47m"

// These will set the text color and then set it back to normal afterwards.
#define BLK(x) FOREBLK x RESETTEXT
#define RED(x) FORERED x RESETTEXT
#define GRN(x) FOREGRN x RESETTEXT
#define YEL(x) FOREYEL x RESETTEXT
#define BLU(x) FOREBLU x RESETTEXT
#define MAG(x) FOREMAG x RESETTEXT
#define CYN(x) FORECYN x RESETTEXT
#define WHT(x) FOREWHT x RESETTEXT

// Example usage: cout << BLU("This text's color is now blue!") << endl;

// These will set the text's background color then reset it back.
#define BackBLK(x) BACKBLK x RESETTEXT
#define BackRED(x) BACKRED x RESETTEXT
#define BackGRN(x) BACKGRN x RESETTEXT
#define BackYEL(x) BACKYEL x RESETTEXT
#define BackBLU(x) BACKBLU x RESETTEXT
#define BackMAG(x) BACKMAG x RESETTEXT
#define BackCYN(x) BACKCYN x RESETTEXT
#define BackWHT(x) BACKWHT x RESETTEXT

// Example usage: cout << BACKRED(FOREBLU("I am blue text on a red background!")) << endl;

// These functions will set the background to the specified color indefinitely.
// NOTE: These do NOT call RESETTEXT afterwards. Thus, they will set the background color indefinitely until the user executes cout << RESETTEXT
// OR if a function is used that calles RESETTEXT i.e. cout << RED("Hello World!") will reset the background color since it calls RESETTEXT.
// To set text COLOR indefinitely, see SetFore functions below.
#define SetBackBLK BACKBLK
#define SetBackRED BACKRED
#define SetBackGRN BACKGRN
#define SetBackYEL BACKYEL
#define SetBackBLU BACKBLU
#define SetBackMAG BACKMAG
#define SetBackCYN BACKCYN
#define SetBackWHT BACKWHT

// Example usage: cout << SetBackRED << "This text's background and all text after it will be red until RESETTEXT is called in some way" << endl;

// These functions will set the text color until RESETTEXT is called. (See above comments)
#define SetForeBLK FOREBLK
#define SetForeRED FORERED
#define SetForeGRN FOREGRN
#define SetForeYEL FOREYEL
#define SetForeBLU FOREBLU
#define SetForeMAG FOREMAG
#define SetForeCYN FORECYN
#define SetForeWHT FOREWHT

// Example usage: cout << SetForeRED << "This text and all text after it will be red until RESETTEXT is called in some way" << endl;

#define BOLD(x) "\x1B[1m" x RESETTEXT // Embolden text then reset it.
#define BRIGHT(x) "\x1B[1m" x RESETTEXT // Brighten text then reset it. (Same as bold but is available for program clarity)
#define UNDL(x) "\x1B[4m" x RESETTEXT // Underline text then reset it.

// Example usage: cout << BOLD(BLU("I am bold blue text!")) << endl;

// These functions will embolden or underline text indefinitely until RESETTEXT is called in some way.

#define SetBOLD "\x1B[1m" // Embolden text indefinitely.
#define SetBRIGHT "\x1B[1m" // Brighten text indefinitely. (Same as bold but is available for program clarity)
#define SetUNDL "\x1B[4m" // Underline text indefinitely.

// Example usage: cout << setBOLD << "I and all text after me will be BOLD/Bright until RESETTEXT is called in some way!" << endl;

#endif /* COLORS_h */

正如你所看到的，它有更多的功能，比如临时、无限期地设置背景颜色，以及其他功能。我也相信它对初学者更友好，更容易记住所有的函数。

#include <iostream>
#include "COLORS.h"

int main() {
  std::cout << SetBackBLU << SetForeRED << endl;
  std::cout << "I am red text on a blue background! :) " << endl;
  return 0;
}

只需在项目中包含头文件，就可以使用彩色终端输出了。

我为此写了一个跨平台的库color_ostream，支持ANSI color, 256 color和true color，你所要做的就是直接包括它，并像这样将cout改为rd_cout。

这里有一个简单的例子:

//hello.cpp
#include "color_ostream.h"

using namespace color_ostream;

int main([[maybe_unused]] int argc, [[maybe_unused]] char *argv[]) {
    rd_wcout.imbue(std::locale(std::locale(),"",LC_CTYPE));
    rd_wcout << L"Hello world\n";
    rd_wcout << L"Hola Mundo\n";
    rd_wcout << L"Bonjour le monde\n";

    rd256_wcout << L"\n256 color" << std::endl;
    rd256_wcout << L"Hello world\n";
    rd256_wcout << L"Hola Mundo\n";
    rd256_wcout << L"Bonjour le monde\n";

    rdtrue_wcout << L"\ntrue color" << std::endl;
    rdtrue_wcout << L"Hello world\n";
    rdtrue_wcout << L"Hola Mundo\n";
    rdtrue_wcout << L"Bonjour le monde\n";
    return 0;
}

你可以直接编写ANSI转义代码来控制颜色，也可以使用诸如{fmt}这样的库来提供api。

例如:

#include <fmt/color.h>

int main() { 
  fmt::print(fg(fmt::color::crimson) | fmt::emphasis::bold,
             "Hello, {}!\n", "world");
}

打印

大多数现代终端都支持ANSI转义序列，但您可以使用terminfo数据库进行检查。

我知道这个问题很老了，但我把这个答案贴出来给未来的读者。我用c++写了一个用于彩色输出的库。这使用操纵者，使工作容易支持跨平台，但没有在这里测试是如何使用这个，

#include "srilakshmikanthanp/ANSI.hpp"

using namespace srilakshmikanthanp;

3位和4位颜色:

// background
std::cout << ansi::BGyellow;
// foreground
std::cout << ansi::FGblue;
// output
std::cout << "Blue on yellow";
// reset
std::cout << ansi::reset;

8位颜色:

// background
std::cout << ansi::BGcolor(157);
// foreground
std::cout << ansi::FGcolor(100);
// outpt
std::cout << "8 bit color";
// reset
std::cout << ansi::reset;

24位颜色:

// background
std::cout << ansi::BGcolor(0, 255, 0);
// foreground
std::cout << ansi::FGcolor(0, 0, 255);
// output
std::cout << "24 bit color";
// reset
std::cout << ansi::reset;

字符串:

使用ansi::str可以很容易地将这个操作符转换为字符串

std::string BGyellow = ansi::str(ansi::BGyellow);
std::string FGblue = ansi::str(ansi::FGblue);
std::string reset = ansi::str(ansi::reset);

std::cout << BGyelow;
// foreground
std::cout << FGblue;
// output
std::cout << "Blue on Yellow";
// reset
std::cout << reset;

你可以在github上找到更多的信息:)