How to convert a string to an integer?

[Apjjm]

I wrote a function some time back that parses out all the digits from a string and converts them into one integer. E.g: "1a2b3c" would become 123.

Code: (Select All)

int getDigit(uint8 digit) {
    int d = digit-48; //48 is ASCII code for 0
    return ((d >= 0)&&(d<=9)) ? d : -1;
}
int parseStringINT(string str) {
    int output = 0;
    for(int i=0; i<str.length(); i++)
     {
      int digit = getDigit(str[i]);
      if(digit > -1) output = 10*output+digit;  
     }
    return output;
}