#include <avr/io.h>        
  
  int main(void) 
  {  
    ddrb = ddrb & ~(1<<5);    
    ddrc = ddrb | (1<<7);  
    
    while (1)
    {
      if(pinb & (1<<5))
        portc = portc | (1<<7);    
      else
        portc = portc & ~(1<<7);
    }
    
    return 0;
  }