How to print '\n' instead of a newline?

Question

I am writing a program that uses prints a hex dump of its input. However, I\'m running into problems when newlines, tabs, etc are passed in and destroying my output formatti

Answer 1

Just use String::replace to replace the offending characters before you call printf.

You could wrap the printf to do something like this:

void printfNeat(char* str)
{
    string tidyString(str);
    tidyString.replace("\n", "\\n");
    printf(tidyString);
}

...and just add extra replace statements to rid yourself of other unwanted characters.

[Edit] or if you want to use arguments, try this:

void printfNeat(char* str, ...)
{
    va_list argList;
    va_start(argList, msg);

    string tidyString(str);
    tidyString.replace("\n", "\\n");
    vprintf(tidyString, argList);

    va_end(argList);
}