How to put char by char from one string to enother?

[wingleader]

Hi.

Got such a problem. I wrote a url decoding programm. The main idea is, that programm take char by char from incoming string, decides what changes must be made, and then inserts them to enother. But, seems, like there is a logical error, because it runs endless circles and never comes to an end. Could someone fix an error?

string Utils::urldecode(string incoming)
{
string outgoing;//RESULT STRING
char current;//CURRENT CHAR
char buffer[2];//BUFFER TO DECODE URL
int read = 0;//READ POSITION
int write = 0;//WRITE POSITION
 
int value[2];
int value_pointer = 0;
int symbol;//NUMERIC VALUE OF CHAR
char result;
while(current!=EOF)
{
current = incoming[read];
switch(current)
{
case '+':
outgoing[write] = ' ';
read++;
write++;
break;
case '%':
read++;
current = incoming[read];
while(value_pointer<2)
{
current = incoming[read];
  switch(current)
      {
        case 'A':
        value[value_pointer]= 10;
        read++;
        value_pointer++;
        break;
        case 'B':
        value[value_pointer]= 11;
        read++;
        value_pointer++;
        break;
        case 'C':
        value[value_pointer]= 12;
        read++;
        value_pointer++;
        break;
        case 'D':
        value[value_pointer]= 13;
        read++;
        value_pointer++;
        break;
        case 'E':
        value[value_pointer]= 14;
        read++;
        value_pointer++;
        break;
        case 'F':
        value[value_pointer]= 15;
        break;
        default:
        value[value_pointer]= atoi(&current);
        read++;
        value_pointer++;
        break;
}
}
symbol = value[0]*16 + value[1];
result = symbol;
outgoing[write]=result;
value_pointer = 0;
read++;
write++;
break;
default:
outgoing[write]=current;
read++;
write++;
break;
 
}
}
return outgoing;
}

PS. By the way, if you find an error, you may use this function for decoding HTML form requests

[wingleader]

please remove this topic, there is no more need in answer, i solved the problem

[Ganon11]

No need to delete it, unless you want to remove the code from the public. Glad to see you found your solution, though :D