Conversion between a color value and a hexadecimal string in C + +

In C + +, color values are typically represented by a uint (unsigned integer), but when the color is saved as text (JSON or XML), it is generally used in hexadecimal notation, i.e., the 0xff0000 style,

So what should I do when I read the color? You can refer to the following code:

#include <stdio.h>  int main ()  {  charszvalue[]  =   "0xff0000";    Char ch[32]; Intnvalude    =   0;         SSCANF (Szvalue, "%x", &nvalude);//hex-to-Digital sprintf (CH, "%d", nvalude); Number-to    -character printf ("%d/n", nvalude);  return 0;     

Conversion between a color value and a hexadecimal string in C + +