bored.c

int reinventTheWheel(char* numberString, int numberLength) {
  int multiplier = 1;
  int i;
  int number = 0;
  
  while (numberLength--) {
    multiplier = 1;
    i = numberLength;
    while (i--) multiplier*= 10;
    switch(*(numberString++)){
      case '9':
        number+=multiplier;
      case '8':
        number+=multiplier;
      case '7':
        number+=multiplier;
      case '6':
        number+=multiplier;
      case '5':
        number+=multiplier;
      case '4':
        number+=multiplier;
      case '3':
        number+=multiplier;
      case '2':
        number+=multiplier;
      case '1':
        number+=multiplier;
    
    }
  }
  return number
}