【单选题】阅读以下程序 # include int main() { int case; float printF; printf ("请输入 2 个数:"); scanf ("%d %f", &case, &printF); printf ("%d %f\n", case, printF); return 0; } 该程序在编译时产生错误,其出错原因是 。
A.
定义语句出错, case 是关键字,不能用作用户自定义标识符
B.
定义语句出错, printF 不能用作用户自定义标识符
C.
定义语句无错, scanf 不能作为输入函数使用
D.
定义语句无错, printf 不能输出 case 的值
【单选题】请读程序: #include<stdio.h> main() { int a;float b,c; scanf('%2d%3f%4f',&a,&b,&c) ; printf('/na=%d,b=%f,c=%f/n',a,b,c) ; } 若运行时从键盘上输入9876543210,↓,则上面程序的输出络果是_______。
C.
a=98,b=765.000000,c=4321.000000
D.
a=98,b=765.0, c=4321.0
【简答题】We found him ___ on the floor.
【单选题】After we came into the house, we found him lying on the ground with his mouth _______ and eyes ________.
【单选题】We found him ___ on his back, looking upward.
【单选题】Entering the house we found him lying on the ground with his mouth ______ and eyes______.