char i=0x01;
int LED1 =2;
int LED2 =3;
int LED3 =4;
int LED4 =5;
int LED5 =6;
int LED6 =7;
int LED7 =8;
int LED8 =9;
 
void setup()
{
 
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(LED3, OUTPUT);
pinMode(LED4, OUTPUT);
pinMode(LED5, OUTPUT);
pinMode(LED6, OUTPUT);
pinMode(LED7, OUTPUT);
pinMode(LED8, OUTPUT);
 
}
void loop()
{
      if(i & 0x01) digitalWrite(LED1, LOW);
      else digitalWrite(LED1,HIGH);
    
 
      if(i & 0x02) digitalWrite(LED2, LOW);
  
      else digitalWrite(LED2,HIGH);
 
     if(i & 0x04) digitalWrite(LED3, LOW);
     else digitalWrite(LED3,HIGH);
 
 
     if(i & 0x08) digitalWrite(LED4, LOW);
  
     else digitalWrite(LED4,HIGH);
  
 
     if(i & 0x10) digitalWrite(LED5, LOW);
  
     else digitalWrite(LED5,HIGH);
 
     if(i & 0x20) digitalWrite(LED6, LOW);
  
     else digitalWrite(LED6,HIGH);
 
    if(i & 0x40) digitalWrite(LED7, LOW);
   
    else digitalWrite(LED7,HIGH);
 
    if(i & 0x80) digitalWrite(LED8, LOW);
   
    else digitalWrite(LED8,HIGH);
   
    i <<= 1;
    delay(100);
    char i=0x01;
    if(i==0x80) char i=0x01;
}
 
led를 if문 쉬프트하여 순차적으로 점등하는대 반복이 되지않습니다.
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//
 
 
// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2018-09-12 오전 10:11:47
// by Ok-Hyun Park
//
int i,n=0;
int LED[]={2,3,4,5,6,7,8,9};
//
void setup(){
  for(i=0;i<8;i++)pinMode(LED[i],OUTPUT);
}
//
void loop(){
  for(i=0;i<8;i++){
    if(n==i)digitalWrite(LED[i],0); else digitalWrite(LED[i],1);  
  }
  delay(100);
  if(++n>7)n=0;
}