C++primer 10.4.2节练习
练习10.29
1 #include<iostream> 2 #include<string> 3 #include <iostream> 4 #include <string> 5 #include <vector> 6 #include <algorithm> 7 #include <list> 8 #include <functional> 9 #include <iterator> 10 #include <fstream> 11 using namespace std; 12 using namespace placeholders; 13 14 15 int main() 16 { 17 vector<string> vec; 18 ifstream in("title.txt"); 19 istream_iterator<string> inFile(in); 20 istream_iterator<string> eof; 21 ostream_iterator<string> out_file(cout, " "); 22 while (inFile != eof) 23 { 24 vec.push_back(*(inFile++)); 25 } 26 for (auto c : vec) 27 out_file = c; 28 cout << endl; 29 system("pause"); 30 return 0; 31 }
练习10.30
1 #include<iostream> 2 #include<string> 3 #include <iostream> 4 #include <string> 5 #include <vector> 6 #include <algorithm> 7 #include <list> 8 #include <functional> 9 #include <iterator> 10 #include <fstream> 11 using namespace std; 12 using namespace placeholders; 13 14 15 int main() 16 { 17 vector<int> num; 18 istream_iterator<int> num_cin(cin); 19 istream_iterator<int> eof; 20 ostream_iterator<int> out_file(cout, " "); 21 while (num_cin != eof) 22 { 23 num.push_back(*num_cin++); 24 } 25 sort(num.begin(), num.end()); 26 copy(num.begin(), num.end(), out_file); 27 cout << endl; 28 system("pause"); 29 return 0; 30 }
练习10.31
1 #include<iostream> 2 #include<string> 3 #include <iostream> 4 #include <string> 5 #include <vector> 6 #include <algorithm> 7 #include <list> 8 #include <functional> 9 #include <iterator> 10 #include <fstream> 11 using namespace std; 12 using namespace placeholders; 13 14 15 int main() 16 { 17 vector<int> num; 18 vector<int> num1; 19 istream_iterator<int> num_cin(cin); 20 istream_iterator<int> eof; 21 ostream_iterator<int> out_file(cout, " "); 22 while (num_cin != eof) 23 { 24 num.push_back(*num_cin++); 25 } 26 sort(num.begin(), num.end()); 27 unique_copy(num.begin(), num.end(), back_inserter(num1)); 28 copy(num1.begin(), num1.end(), out_file); 29 cout << endl; 30 system("pause"); 31 return 0; 32 }
练习10.32
自己写的程序有错，需要修改，稍后上传
练习10.33
1 #include<iostream> 2 #include<string> 3 #include <iostream> 4 #include <string> 5 #include <vector> 6 #include <algorithm> 7 #include <list> 8 #include <functional> 9 #include <iterator> 10 #include <fstream> 11 using namespace std; 12 using namespace placeholders; 13 14 void unraval(ifstream &in, ofstream &out1, ofstream &out2); 15 16 int main() 17 { 18 ifstream in("test1.txt"); 19 ofstream out1("test2.txt", ofstream::app); 20 ofstream out2("test3.txt", ofstream::app); 21 unraval(in, out1, out2); 22 system("pause"); 23 return 0; 24 } 25 26 void unraval(ifstream &in, ofstream &out1, ofstream &out2) 27 { 28 istream_iterator<int> inFile(in), eof; 29 ostream_iterator<int> out_file1(out1, " "); 30 ostream_iterator<int> out_file2(out2, "\n"); 31 while (inFile != eof) 32 { 33 if ((*inFile) % 2 != 0) 34 out_file1 = *inFile++; 35 else 36 out_file2 = *inFile++; 37 } 38 }
