Pic16F877 Sending data via serial port

#include <16f877.h>
#device ADC=8                 // 8-bit ADC
#fuses XT, NOWDT, NOPROTECT, NOBROWNOUT, NOLVP, NOPUT, NOWRT, NODEBUG, NOCPD
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, parity=N, stop=1)
#use fast_io(a)               // Perform of I/O for Port A
#use standard_io(b)
//#use standard_io(c)



int right=0;
int left=0; 
float angle_1=0;
float angle_2=0;
float diff=0;
int go=0;
float angle=0;


#int_rb
void rb_isr()
{

 if(input(PIN_B4)==1||input(PIN_B5)==1)
   {
       if(right==0&&left==0)
       {
            if((input(PIN_B4)==1)&&(input(PIN_B5)==0))    //Eger vurus yeni ise burada sag veya soldan geldýgýný anlýcak
            {
                  puts("\rright swing");
                  right=1;
                  //goto sag;
             }
      
             if((input(PIN_B4)==0)&&(input(PIN_B5)==1)) 
             {
                 puts("\rleft swing");
                 left=1;
                 //goto sol;
              }
   
       }
      
      if (right==1&&left==0)
      {
      right:
          
         if((input(PIN_B4)==1)&&(input(PIN_B5)==0))    //ýlk sensor kontrolu
         {
            puts("right sensor");
            angle_1=angle;            //ilk açýyý al
         }
         
         if((input(PIN_B4)==0)&&(input(PIN_B5)==1))    //Eger 2.sensor aktif ise buradan 2. aciyi alacak.
         {                                         //eger sensör rangeleri birbirini kapsar ise sagi buraya koyabilirz
            puts("left sensor");
            angle_2=angle;
            diff=angle_2-angle_1;
            go=1;                //ýsýmýzýn býttýgýný programa solucek degýsken
            right=0;               //býr sonraki vurus icin degiþkeni sýfýrla
         }     
           
      }
     
        if (right==0&&left==1)
            {
     left:
                
               if((input(PIN_B5)==1)&&(input(PIN_B4)==0))    //ýlk sensor kontrolu
               {
                  puts("left sensor");
                  angle_1=angle;            //ilk açýyý al
               }
               
               if((input(PIN_B5)==0)&&(input(PIN_B4)==1))    //Eger 2.sensor aktif ise buradan 2. aciyi alacak. 
               {                                          //eger sensör rangeleri birbirini kapsar ise sagi buraya koyabilirz
                  puts("right sensor");
                  angle_2=angle;
                  diff=angle_2-angle_1;                 
                  left=0;               //býr sonraki vurus icin degiþkeni sýfýrla
                  go=1;                //ýsýmýzýn býttýgýný programa solucek degýsken
               }     
                 
            }
   }
 
}

#int_ext
void ext_isr()
{


   if(input(PIN_B1)==1)
      angle=angle+.1;
             
   else
      angle=angle-.1;
        

}







void main ()
{
   float battery;
   float angle_control;
   int battery_status;
   angle_control=angle;
   
   set_tris_A(00000001);
  // set_tris_B(00110011);
  
   setup_adc(ADC_CLOCK_INTERNAL);  // ADC clock frequency is equal internal clock frequency
   setup_adc_ports(AN0);    // AN0 is Analog.

   setup_psp(PSP_DISABLED);
   setup_spi(FALSE);
   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DISABLED,0,1);
   enable_interrupts(INT_RB);
   enable_interrupts(INT_EXT);
   enable_interrupts(GLOBAL);
   ext_int_edge(H_TO_L);

      while(TRUE)
         {
         
         angle=0;
         set_adc_channel(0);
         delay_us(10);
         battery = read_adc();
            
         if(battery>=250)
         battery_status=10;
         else if(battery>=225)
         battery_status=9;
         else if(battery>=200)
         battery_status=8;
         else if(battery>=175)
         battery_status=7;
         else if(battery>=150)
         battery_status=6;
         else if(battery>=125)
         battery_status=5;
         else if(battery>=100)
         battery_status=4;
         else if(battery>=75)
         battery_status=3;
         else if(battery>=50)
         battery_status=2;
         else if(battery>=25)
         battery_status=1;
         else if(battery>=0)
         battery_status=0;
         puts("battery_status");
         printf("%d\r",battery_status);
    
           
           output_C(0x00);
           
         
               while((right==0)&&(left==0));                 
             
              
               while(go==0)
                  {
                  while(angle_control==angle);
                  
                  angle_control=angle;
                  //printf("%f",angle_control);
                                         
                  }
               
               //disable_interrupts(INT_RB);
              puts("angle difference");
              printf("%f\r\r",diff);
              right=0;
              left=0;
              go=0;
                             
         }
         
}