dspic33ep512mu814 sensing input without input

if(input(pin_e0)==0)

{
count=count+1;
lcd_gotoxy(1, 1); 
printf(lcd_putc, "%lu",cont);
}
if i reset the controller manually in 4 are 5th time, the if loop condition is executing that is i am getting the count constantly without the pin input if i measure the voltage on pin e0 it is 3.3v, why this happening. kindly help  

the fuse setting are as follows
#include <33EP512MU814.h>

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES NOCKSNOFSM               //Clock Switching is disabled, fail Safe clock monitor is disabled
//#FUSES CKSFSM                   //Clock Switching is enabled, fail Safe clock monitor is enabled
//#FUSES NOBROWNOUT               //No brownout reset
#FUSES NOJTAG                   //JTAG disabled
#FUSES PUT128                 //Power On Reset Timer value 128ms

#device ICSP=1
#use delay(clock=96MHz,crystal=12MHz)

//#use i2c(MASTER, SCL=PIN_F5, SDA=PIN_F4, FAST, stream=I2C_PORT1)
#use i2c(MASTER, SCL=PIN_F5, SDA=PIN_F4, FAST)
#pin_select U1TX=PIN_G6
#pin_select U1RX=PIN_C4
#use rs232(UART1, baud=9600, stream=UART_PORT1)

#pin_select U2TX=PIN_G8
#pin_select U2RX=PIN_G7
#use rs232(UART2, baud=9600, stream=UART_PORT2)

#pin_select U3TX=PIN_D3
#pin_select U3RX=PIN_D12
#use rs232(UART3, baud=9600, stream=UART_PORT3)


#pin_select INT1=PIN_A3