Charlieplexing Arduino

#include <stdlib.h>

byte tempChar = 0;

void setup()
{
  Serial.begin(9600);

}


void loop()
{

  if(Serial.available() > 0)
  {
    tempChar = 0;

      char temp = char(Serial.read());

      tempChar = atoi(&temp);

    Serial.println(tempChar, DEC);
  }

  Range(tempChar);

}

void Range(byte input)
{

  if(input == 1)
 {
   Charlie(1);

 }
 else if(input == 2)
 {
   for(byte i = 1; i < 3; i++)
   {
     Charlie(i);
   }

 }
 else if(input == 3)
 {

   for(byte i = 1; i < 4; i++)
   {
     Charlie(i);
     delay(4);
   }

 }
 else if(input == 4)
 {
   for(byte i = 1; i < 5; i++)
   {
     Charlie(i);
     delay(4);
   }

 }
 else if(input == 5)
 {
   for(byte i = 1; i < 6; i++)
   {
     Charlie(i);
     delay(0);
   }

 }
 else if(input == 6)
 {
   for(byte i = 1; i < 7; i++)
   {
     Charlie(i);
     delay(0);
   }

 }
 else
 {
   Charlie(0);
 }


}




void Charlie(byte input)
{

 if(input == 1)
 {
   pinMode(2, OUTPUT);
   pinMode(3, OUTPUT);
   pinMode(4, INPUT);

   digitalWrite(2, 1);
   digitalWrite(3, 0);
   digitalWrite(4, 0);

 }
 else if(input == 2)
 {
   pinMode(2, OUTPUT);
   pinMode(3, OUTPUT);
   pinMode(4, INPUT);

   digitalWrite(2, 0);
   digitalWrite(3, 1);
   digitalWrite(4, 0);

 }
 else if(input == 3)
 {
   pinMode(2, OUTPUT);
   pinMode(3, INPUT);
   pinMode(4, OUTPUT);

   digitalWrite(2, 0);
   digitalWrite(3, 0);
   digitalWrite(4, 1);

 }
 else if(input == 4)
 {
   pinMode(2, OUTPUT);
   pinMode(3, INPUT);
   pinMode(4, OUTPUT);

   digitalWrite(2, 1);
   digitalWrite(3, 0);
   digitalWrite(4, 0);

 }
 else if(input == 5)
 {
   pinMode(2, INPUT);
   pinMode(3, OUTPUT);
   pinMode(4, OUTPUT);

   digitalWrite(2, 0);
   digitalWrite(3, 1);
   digitalWrite(4, 0);

 }
 else if(input == 6)
 {
   pinMode(2, INPUT);
   pinMode(3, OUTPUT);
   pinMode(4, OUTPUT);

   digitalWrite(2, 0);
   digitalWrite(3, 0);
   digitalWrite(4, 1);

 }
 else
 {
   digitalWrite(2, 0);
   digitalWrite(3, 0);
   digitalWrite(4, 0);
 }


}