C++Primer(第10章课后程序题源代码)
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2022-04-30 19:37:43
10.1
#include
#include
#include
#include
using namespace std;
int main(int arg...
10.1
#include #include #include #include using namespace std; int main(int argc,char *argv[]) { ifstream in(argv[1]); if (!in) { cout << "打开输入文件失败!" << endl; exit(1); } vector vi; int val; while (in >> val) { vi.push_back(val); } cout << "请输入要搜索的整数:"; cin >> val; cout << "序列中包含" << count(vi.begin(), vi.end(), val) << "个" << val; return 0; }
#include<iostream> #include<fstream> #include<vector> #include<algorithm> using namespace std; int main(int argc,char *argv[]) { ifstream in(argv[1]); if (!in) { cout << "打开输入文件失败!" << endl; exit(1); } vector<int> vi; int val; while (in >> val) { vi.push_back(val); } cout << "请输入要搜索的整数:"; cin >> val; int c = 0; for (auto iter = vi.begin(); iter != vi.end(); iter++) if (*iter == val) c++; cout << "序列中包含" <<c pre="" return="">
10.2
#include #include #include #include #include #include using namespace std; int main(int argc,char *argv[]) { ifstream in(argv[1]); if (!in) { cout ls; string word; while (in >> word) ls.push_back(word); cout > word; cout
10.3
#include #include #include #include #include #include #include using namespace std; int main(int argc,char *argv[]) { ifstream in(argv[1]); if (!in) { cout vi; int val; while (in >> val) vi.push_back(val); cout
10.4
#include #include #include #include #include #include #include using namespace std; int main(int argc,char *argv[]) { ifstream in(argv[1]); if (!in) { cout vd; double val; while (in >> val) vd.push_back(val); cout
10.5
#pragma warning(disable:4996) #include #include #include using namespace std; int main(int argc, char *argv[]) { char *p[] = { "Hello", "World", "!" }; char *q[] = { strdup(p[0]), strdup(p[1]), strdup(p[2]) }; char *r[] = { p[0], p[1], p[2] }; cout
10.6
#pragma warning(disable:4996) #include #include #include #include using namespace std; int main(int argc, char *argv[]) { ifstream in(argv[1]); if (!in) { cout vi; int val; while (in >> val) { vi.push_back(val); cout
10.7
#pragma warning(disable:4996) #include #include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { ifstream in(argv[1]); if (!in) { cout lst; vector vec; int val; while (in >> val) { lst.push_back(val); } copy(lst.begin(), lst.end(), back_inserter(vec)); cout
#pragma warning(disable:4996) #include #include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { vector vec; vec.reserve(10); fill_n(back_inserter(vec), 10, 0); for (auto iter = vec.begin(); iter != vec.end(); iter++) cout
10.9
#pragma warning(disable:4996) #include #include #include #include #include #include #include using namespace std; inline void output_words(vector &words) { for (auto iter = words.begin(); iter != words.end(); iter++) cout &words) { output_words(words); sort(words.begin(), words.end()); output_words(words); auto end_unique = unique(words.begin(), words.end()); output_words(words); words.erase(end_unique, words.end()); output_words(words); } int main(int argc, char *argv[]) { ifstream in(argv[1]); if (!in) { cout words; string word; while (in >> word) { words.push_back(word); } elimDups(words); return 0; }
10.11
#pragma warning(disable:4996) #include #include #include #include #include #include #include using namespace std; inline void output_words(vector &words) { for (auto iter = words.begin(); iter != words.end(); iter++) cout &words) { output_words(words); sort(words.begin(), words.end()); output_words(words); auto end_unique = unique(words.begin(), words.end()); output_words(words); words.erase(end_unique, words.end()); output_words(words); stable_sort(words.begin(),words.end(), isShorter); output_words(words); } int main(int argc, char *argv[]) { ifstream in(argv[1]); if (!in) { cout words; string word; while (in >> word) { words.push_back(word); } elimDups(words); return 0; }
10.12 略 10.13
#pragma warning(disable:4996) #include #include #include #include #include #include #include using namespace std; inline void output_words(vector::iterator beg,vector::iterator end) { for (auto iter = beg;iter!=end; iter++) cout = 5; } int main(int argc, char *argv[]) { ifstream in(argv[1]); if (!in) { cout words; string word; while (in >> word) words.push_back(word); output_words(words.begin(), words.end()); auto iter = partition(words.begin(), words.end(), five_or_more); output_words(words.begin(), iter); return 0; }
10.14
#include using namespace std; int main(int argc,char *argv[]) { auto sum = [](int a, int b){return a + b; }; cout
10.15
#include using namespace std; void add(int a) { auto sum = [a](int b){return a + b; }; cout
10.21
#include #include using namespace std; void mutable_lambda(void) { int i = 5; auto f = [i]()mutable->bool{if (i > 0){ i--; return false; } else return true; }; for (int j = 0; j
10.22
#include #include #include #include #include #include using namespace std; using namespace std::placeholders; string make_plural(size_t ctr, const string &word, const string &ending) { return (ctr == 1) ? word : word + ending; } inline void output_words(vector &words) { for (auto iter = words.begin(); iter != words.end(); iter++) cout = sz; } void biggies(vector&words, vector::size_type sz) { output_words(words); auto bc = count_if(words.begin(), words.end(), bind(check_size, _1, sz)); cout words; string word; while (in >> word) words.push_back(word); biggies(words, 6); system("pause"); return 0; }
10.24
#include #include #include #include #include #include using namespace std; using namespace std::placeholders; string make_plural(size_t ctr, const string &word, const string &ending) { return (ctr == 1) ? word : word + ending; } bool check_size(const string &s, string::size_type sz) { return s.size() &vc, const string &s) { auto p = find_if(vc.begin(), vc.end(), bind(check_size, s, _1)); cout vc = { 1, 2, 3, 4, 5, 6, 7, 8, 9 }; biggies(vc, "Hello"); biggies(vc, "everyone"); biggies(vc, "!"); system("pause"); return 0; }
10.25
#include #include #include #include #include #include using namespace std; using namespace std::placeholders; string make_plural(size_t ctr, const string &word, const string &ending) { return (ctr == 1) ? word : word + ending; } void elimDups(vector &words) { sort(words.begin(), words.end()); auto end_unique = unique(words.begin(), words.end()); words.erase(end_unique, words.end()); } bool check_size(const string &s, string::size_type sz) { return s.size() >= sz; } void biggies(vector&words, vector::size_type sz) { elimDups(words); for_each(words.begin(), words.end(), [](const string &s){cout words; string word; while (in >> word) words.push_back(word); biggies(words, 6); system("pause"); return 0; }
10.27
#include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { vector vi = { 1, 2, 2, 3, 4, 5, 5, 6 }; list li; unique_copy(vi.begin(), vi.end(), inserter(li, li.begin())); for (auto v : li) { cout
10.28
#include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { vector vi = { 1, 2, 3, 4, 5, 6, 7, 8, 9 }; list li1, li2, li3; unique_copy(vi.begin(), vi.end(), inserter(li1, li1.begin())); for (auto v : li1) cout
10.29
#include #include #include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { ifstream in(argv[1]); if (!in) { cout in_iter(in); istream_iterator eof; vector words; while (in_iter != eof) words.push_back(*in_iter++); for (auto word : words) cout
10.30
#include #include #include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { istream_iterator in_iter(cin); istream_iterator eof; vector vi; while (in_iter != eof) vi.push_back(*in_iter++); sort(vi.begin(), vi.end()); ostream_iterator out_iter(cout, " "); copy(vi.begin(), vi.end(), out_iter); return 0; }
10.31
#include #include #include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { istream_iterator in_iter(cin); istream_iterator eof; vector vi; while (in_iter != eof) vi.push_back(*in_iter++); sort(vi.begin(), vi.end()); ostream_iterator out_iter(cout, " "); unique_copy(vi.begin(), vi.end(), out_iter); return 0; }
10.32
#include #include #include #include #include #include #include #include #include"Sales_data.h" using namespace std; int main() { vectorvs; istream_iterator in_iter(cin); istream_iterator eof; while (in_iter != eof) vs.push_back(*in_iter++); if (vs.empty()) { std::cerr
10.33
#include #include #include #include #include #include #include #include #include"Sales_data.h" using namespace std; int main(int argc, char *argv[]) { if (argc != 4) { cout in_iter(in); istream_iterator eof; ostream_iterator out_iter1(out1, " "); ostream_iterator out_iter2(out2, "\n"); while (in_iter != eof) { if (*in_iter & 1) *out_iter1++ = *in_iter; else *out_iter2++ = *in_iter; in_iter++; } return 0; }
10.34
#include #include #include #include using namespace std; int main(int argc, char *argv[]) { if (argc != 2) { cout vi; int v; while (in >> v) vi.push_back(v); for (auto r_iter = vi.crbegin(); r_iter != vi.crend();++r_iter) cout
10.35
#include #include #include #include using namespace std; int main(int argc, char *argv[]) { if (argc != 2) { cout vi; int v; while (in >> v) vi.push_back(v); for (auto r_iter = vi.cend(); r_iter != vi.begin();) cout
10.36
#include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { list li = { 0, 1, 2, 0, 3, 4, 5, 0, 6 }; auto last_z = find(li.rbegin(), li.rend(), 0); last_z++; int p = 1; for (auto iter = li.begin(); iter != last_z.base(); iter++, p++); if (p >= li.size()) cout
#include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { list li = { 0, 1, 2, 0, 3, 4, 5, 0, 6 }; auto prev = find(li.begin(), li.end(), 0); if (prev == li.end()) cout
10.37
#include #include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { ostream_iterator out_iter(cout, " "); vector vi = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }; copy(vi.begin(), vi.end(), out_iter); cout li; vector::reverse_iterator re(vi.begin() + 2); vector::reverse_iterator rb(vi.begin() + 7); copy(rb, re, back_inserter(li)); copy(li.begin(), li.end(), out_iter); cout
#include #include #include #include #include #include using namespace std; int main(int argc, char *argv[]) { ostream_iterator out_iter(cout, " "); vector vi = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }; copy(vi.begin(), vi.end(), out_iter); cout li; copy(vi.rbegin() + vi.size() - 7, vi.rbegin() + vi.size() - 3 + 1, back_inserter(li)); copy(li.begin(), li.end(), out_iter); cout
10.42
#include #include #include #include #include #include #include using namespace std; inline void output_words(list &words) { for (auto iter = words.begin(); iter != words.end(); iter++) cout &words) { output_words(words); words.sort(); output_words(words); words.unique(); output_words(words); } int main(int argc, char *argv[]) { ifstream in(argv[1]); if (!in) { cout words; string word; while (in >> word) words.push_back(word); elimDups(words); return 0; }
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