问一个简单的头文件问题！
看后面的错误信息！谁能告诉我怎么回事？该怎么办！这是课本上的代码！
#include<iostream>#include<string>#include"deque.h"#include"algo.h"int main(){ deque<string>str; str.push_back("string"); str.push_back("string"); str.push_back("string"); str.push_back("last string"); str.push_front("first string"); copy(str.begin(),str,str.end(),ostream_iterator<string>(cout,"\n")); str.pop_front(); str.pop_back(); for(int i=1;i<str.size();i++) { str[i]="another"+str[i]; } str.resize(4,"resized string"); copy(str.begin(),str.end(),ostream_iterator<string>(cout,"\n")); return 0;}/*下面是提示的错误1004.cppE:\C++\1004\1004.cpp(3) : fatal error C1083: Cannot open include file: 'deque.h': No such file or directoryError executing cl.exe.*/