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1)#include < ios的答案

1)#include < iostream >
2)#include < cmath >
3)using namespace std;
4)double max(double x,doubley)
5){
6)if(x>y)
7)return x;
8)else
9)return y;
10)}
11)int main()
12){
13)doublea,b,c;
14)cout <<" input two numbers: ";
15)cin >> a >> b;
16)c=max(a,b);
17)cout <<" the squart of max imum="<< sqrt( c );
18)}

执行第15行时,若输入“8空格9回车”,则执行完第9行后返回的值是:()

单选题
2021-12-31 01:48
A、A.8
B、8.0000000000000000
C、9
D、9.0000000000000000
查看答案

正确答案
D

试题解析
调用max()函数时,将会执行第6行的if语句,执行第15行时,若输入“8空格9回车”,则条件表达式x>y的值为false,接下来将会去执行第9行,因此执行完第9行后返回的值是形式参数y的值9.0000000000000000。

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阅读程序,说明程序执行后BH,BL,AL,CL的值;
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1)#include < iostream >
2)#include < cmath >
3)using namespace std;
4)double max(double x,doubley)
5){
6)if(x>y)
7)return x;
8)else
9)return y;
10)}
11)int main()
12){
13)doublea,b,c;
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3)using namespace std;
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5){
6)if(x>y)
7)return x;
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执行第15行时,若输入“8空格9回车”,则执行完第9行后返回的值是:()
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