linux gcc 4.4.1
I have the following fprintf statement and I would like to have the OK as green and the FAILED as red. Is this possible?
if(devh == -1)
{
fprintf(stderr, "Device [ FAILED ]\n");
}
else
{
fprintf(stderr, "Device [ OK ]\n");
}
Many thanks for any suggestions,
I use to use the following macros to add color to terminal output.
#define RESET "\033[0m"
#define BLACK "\033[30m" /* Black */
#define RED "\033[31m" /* Red */
#define GREEN "\033[32m" /* Green */
#define YELLOW "\033[33m" /* Yellow */
#define BLUE "\033[34m" /* Blue */
#define MAGENTA "\033[35m" /* Magenta */
#define CYAN "\033[36m" /* Cyan */
#define WHITE "\033[37m" /* White */
#define BOLDBLACK "\033[1m\033[30m" /* Bold Black */
#define BOLDRED "\033[1m\033[31m" /* Bold Red */
#define BOLDGREEN "\033[1m\033[32m" /* Bold Green */
#define BOLDYELLOW "\033[1m\033[33m" /* Bold Yellow */
#define BOLDBLUE "\033[1m\033[34m" /* Bold Blue */
#define BOLDMAGENTA "\033[1m\033[35m" /* Bold Magenta */
#define BOLDCYAN "\033[1m\033[36m" /* Bold Cyan */
#define BOLDWHITE "\033[1m\033[37m" /* Bold White */
...and use like
printf( GREEN "Here is some text\n" RESET );
Example of use Colored grep?
And for your example
if(devh == -1)
{
fprintf(stderr, "Device [ " RED "FAILED" RESET " ]\n");
}
else
{
fprintf(stderr, "Device [ " GREEN "OK" RESET " ]\n");
}
You should probably use some library such as ncurses to handle terminal.
Alternatively, under Linux you could use some console escape sequences such as:
printf ("\033[32;1m OK \033[0m\n");
(in this case 32 stands for green), but it is neither portable nor elegant.
