첫 번째 버튼을 누르면 7세그먼트가 9999까지 표시되고 
두 번째 버튼을 누르면 7세그먼트가 상수값 만큼만 작동되고 꺼지도록 설정하고 싶은데 계속 오류가 걸립니다 도와주세요 ㅠㅠ
 
#include <io.h>
#include <delay.h>
 
void main(void){
    int k;
    int seg_data[10]={63,9,91,79,102,109,126,39,127,103};
    unsigned int one, two, three, four, count=0;
    unsigned int i, speed=10;
    DDRA=0xff;
    DDRC=0xff;
    DDRD=0x00;
    
    while(1){
    
    if(PIND==0x01){
    four = (count%10000)/1000;
    three = (count%1000)/100;
    two = (count%100)/10;
    one = (count%10);
    for (i=1;i<speed;i++){
    delay_ms(5);
    PORTA=seg_data[four];
    PORTC=0x0e;
    delay_ms(5);
    PORTA=seg_data[three];
    PORTC=0x0e;
    delay_ms(5);
    PORTA=seg_data[two];
    PORTC=0x0e;
    delay_ms(5);
    PORTA=seg_data[one];
    PORTC=0x0e;
    }
    count++;
    if(count>=10000) count =0;
    }
    
    else if(PIND==0x02){ 
    for(k=0;k<25;k++){
   four = (count%10000)/1000;
    three = (count%1000)/100;
    two = (count%100)/10;
    one = (count%10);
    for (i=1;i<speed;i++){
    delay_ms(5);
    PORTA=seg_data[four];
    PORTC=0x0e;
    delay_ms(5);
    PORTA=seg_data[three];
    PORTC=0x0e;
    delay_ms(5);
    PORTA=seg_data[two];
    PORTC=0x0e;
    delay_ms(5);
    PORTA=seg_data[one];
    PORTC=0x0e;
    }
    count++;
    if(count>=10000) count =0;
    }
    
    }
}
}