shift left-shift right velue

#include <16F877.h> #device adc=8 #FUSES NOWDT ,XT #use delay(clock=4000000) int8 x,k; void main() { setup_adc_ports(NO_ANALOGS); setup_adc(ADC_OFF); setup_psp(PSP_DISABLED); setup_spi(SPI_SS_DISABLED); setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1); setup_timer_1(T1_DISABLED); setup_timer_2(T2_DISABLED,0,1); set_tris_b(0x00); output_b(0); k=0; x=0x01; while(true) { for(k=0;k<=7;++k){ output_b (x); delay_ms(150); shift_left(&x,1,0); } x = 0x80; k = 0; for(k=0;k<=7;++k){ output_b (x); delay_ms(150); shift_right(&x,1,0); } x = 0x01; k = 0; } }