有8个候选人，统计每个候选人的得票数。但编译运行后发现统计的票数不对。原因何在？代码如下：
#include"stdio.h"
#include"stdlib.h"
main(){
    int i,n1=0,n2=0,n3=0,n4=0,n5=0,n6=0,n7=0,n8=0;
    for(i=1;i<=8;i++){
        scanf("%d",&i);
        if(i==1)n1+=1;
        if(i==2)n2+=1;
        if(i==3)n3+=1;
        if(i==4)n4+=1;
        if(i==5)n5+=1;
        if(i==6)n6+=1;
        if(i==7)n7+=1;
        if(i==8)n8+=1;
        scanf("%d",&i);
    }
    printf("n1=%d n2=%d n3=%d n4=%d n5=%d n6=%d n7=%d n8=%d\n",n1,n2,n3,n4,n5,n6,n7,n8);
    system("pause");
}