填空:从键盘输入任意一个学生的学号,查找该学号是否存在,存在打印其学 ...答:int Binsearch( long a[ ], int n, long x );void main(){ long num[ARR_SIZE], x;int n, pos;printf("输入班级实际人数:");scanf("%d", &n);Input(num, n);printf("输入待查找学号:");scanf("%ld", &x );pos = Binsearch(num, n, x);if(pos + 1)printf("NUM=%ld\...