程序填空:下列程序是用二分查找法查找指定的数 #include "stdio.h" main() { int a[6]={1,2,4,6,8,78},x,top,bott,loca,mid; scanf("%d",&x); top=0;bott=5; ————————; while(top<=bott) {________________; if(x==a[mid]) {loca=1;break;} else if(x bott=mid-1; else top=mid+1; } if(loca==1) printf("%d",mid+1); else printf("NO"); }