报错

[小兔和小山]

源代码如下：
#include<iostream>
int main()
{
using namespace std;
cout.setf(ios_base::fixed, ios_base::floatfield);
cout << "Integer division: 9/5 = " << 9 / 5 << endl;
cout << "Floating-point division: 9.0/5.0 = ";
cout << 9.0 / 5.0 << endl;
cout << "Mixed division: 9.0/5 = " << 9.0 / 5 << endl;
cout << "double constants: le7/9.0 = ";
cout << l.e7 / 9.0 << endl;
cout << "float constants: le7f/9.0f = ";
cout << l.e7f / 9.0f << endl;
return 0;
}

输出提示：
1>g:\程序文件\microsoft visual studio 2008\c++语言\demo3.11\demo3.11\demo.cpp(11) : error C2065: “l”: 未声明的标识符
1>g:\程序文件\microsoft visual studio 2008\c++语言\demo3.11\demo3.11\demo.cpp(11) : error C2228: “.e7”的左边必须有类/结构/联合
1> 类型是“'unknown-type'”
1>g:\程序文件\microsoft visual studio 2008\c++语言\demo3.11\demo3.11\demo.cpp(13) : error C2065: “l”: 未声明的标识符
1>g:\程序文件\microsoft visual studio 2008\c++语言\demo3.11\demo3.11\demo.cpp(13) : error C2228: “.e7f”的左边必须有类/结构/联合

[tanling_zero]

cout << l.e7 / 9.0 << endl; cout << "float constants: le7f/9.0f = "; cout << l.e7f / 9.0f << endl; l.e7 l 是字符啊 ， 是1吧，你抄错了.

[小兔和小山]

是的，谢谢了！