10_define_new_class

Author: shiyutang

10_define_new_class/10_define_new_class.cpp

@@ -0,0 +1,122 @@
+//
+// Created by Daisy on 2020/12/14.
+//
+
+#include <string>
+#include <vector>
+#include <iostream>
+#include <algorithm>
+#include <iomanip>
+#include "../5_organize program_data/original/grade.h"
+
+using std::istream;
+using namespace std;
+
+class Student_info_dnc{
+private:
+    std::string n;
+    double midterm, final;
+    std::vector<double> homework;
+    std::istream& readhw(std::istream&);
+
+public:
+    std::istream& read(std::istream&);
+    double grade() const;
+    std::string name() const {return n;}
+    bool valid() const {return  !homework.empty();}
+    Student_info_dnc(): midterm(0),final(0) {};
+    Student_info_dnc(std::istream& in) {read(in);};
+};
+
+double Student_info_dnc::grade() const
+{
+    return ::calgrade(midterm,final,homework);
+}
+
+bool compare_dnc(const  Student_info_dnc& x, const  Student_info_dnc& y)
+{
+    return x.name() < y.name();
+}
+
+bool compare_dnc_pass(const  Student_info_dnc& x, const  Student_info_dnc& y)
+{
+    return x.grade() > y.grade();
+}
+
+std::istream& Student_info_dnc::readhw(std::istream& in){
+    if(in){
+        homework.clear();
+        double x;
+        while(in>>x)
+            homework.push_back(x);
+
+        in.clear();
+    }
+    return in;
+}
+
+std::istream& Student_info_dnc::read(std::istream& in ) {
+    in >> n >> midterm >> final;
+    readhw(in);
+    return in;
+};
+
+string PF_grade(double grade)
+{
+    if(grade>60)
+        return "P";
+    else
+        return "F";
+}
+
+
+
+int main()
+{
+    vector<Student_info_dnc> students;
+    Student_info_dnc record;
+    string::size_type maxlen = 0;
+
+    while (record.read(cin))
+    {
+        maxlen = max(maxlen, record.name().size());
+        students.push_back(record);
+    }
+
+    sort(students.begin(),students.end(), compare_dnc);
+
+    for (vector<Student_info_dnc>::size_type i = 0; i!=students.size(); ++i)
+    {
+        cout <<setw(maxlen+1) << students[i].name();
+        if (students[i].valid()){
+            double final_grade = students[i].grade();
+            streamsize prec = cout.precision();
+            cout << setprecision(3)
+            <<setw(maxlen+1) << final_grade
+            <<setw(maxlen+1) << PF_grade(final_grade)
+            << setprecision(prec) << endl;
+        }
+        else
+            cout << " This student didn't submit homework" << endl;
+    }
+
+//    sort(students.begin(), students.end(), compare_dnc_pass);
+
+    return 0;
+}
+
+
+//d 80 90 80 80 80 80
+//c 80 90 80 80 80 80
+//a 80 90 44 34 23 12
+//e 80 90 80 80 80 80
+//b 80 90
+// end of file
+
+
+//d 80 90 80 80 80 80
+//c 20 40 30 30 10 80
+//a 80 90 44 34 23 12
+//e 20 10 30 10 20 20
+//b 80 90 10
+// end of file

9_Generics.cpp

@@ -106,7 +106,7 @@ void split_iter(const string& str, Out os){
 
 #include <iterator>
 
-int main()
+int generics()
 {
     string str;
     vector<string> str_vec;
@@ -128,10 +128,10 @@ int main()
         for (auto  it = str_vec.begin(); it != str_vec.end(); it++)
             cout << (*it) << " " ;
 
-        reverse_diy_noswap(str_vec.begin(), str_vec.end());
-        cout << "after reverse_noswap: ";
-        for (auto  it = str_vec.begin(); it != str_vec.end(); it++)
-            cout << (*it) << " " ;
+//        reverse_diy_noswap(str_vec.begin(), str_vec.end());
+//        cout << "after reverse_noswap: ";
+//        for (auto  it = str_vec.begin(); it != str_vec.end(); it++)
+//            cout << (*it) << " " ;
 
         replace_diy(str_vec.begin(), str_vec.end(), "t", "r");
         cout << endl << "after replace_diy: ";
@@ -144,5 +144,6 @@ int main()
             cout << (*it) << " ";
 
     }
+    return 0;
 }
 //I like playing the piano r t

CMakeLists.txt

@@ -3,4 +3,4 @@ project(Accleratedcpp)
 
 set(CMAKE_CXX_STANDARD 11)
 
-add_executable(Accleratedcpp "5_organize program_data/original/pmain.cpp" "1_Hello World.cpp" 2_chars.cpp "3_loop and count.cpp" "4_use batch data.cpp" "5_organize program_data/original/grade.h" "5_organize program_data/original/Student_info.h" "5_organize program_data/original/Student_info_funcs.cpp" "5_organize program_data/original/median_funcs.cpp" "5_organize program_data/original/median.h" "5_organize program_data/original/grade_funcs.cpp" "7_Use library/use library.cpp" "5_organize program_data/memOptim/main.cpp" "5_organize program_data/memOptim/grade.h" "5_organize program_data/memOptim/grade_funcs.cpp" "5_organize program_data/memOptim/Student_info.h" "5_organize program_data/memOptim/Student_info_funcs.cpp" "5_organize program_data/main.cpp" "6_UseIterator extract_fail.cpp" "7_Use library/find_url.cpp" "7_Use library/StudentGrades.cpp" "7_Use library/6-1.cpp" "7_Use library/using library.h" 8_CorrelatedContainer.cpp "7_Use library/StudentGrade.h" 8_MakeaSentence.cpp 9_Generics.cpp)
+add_executable(Accleratedcpp "5_organize program_data/original/pmain.cpp" "1_Hello World.cpp" 2_chars.cpp "3_loop and count.cpp" "4_use batch data.cpp" "5_organize program_data/original/grade.h" "5_organize program_data/original/Student_info.h" "5_organize program_data/original/Student_info_funcs.cpp" "5_organize program_data/original/median_funcs.cpp" "5_organize program_data/original/median.h" "5_organize program_data/original/grade_funcs.cpp" "7_Use library/use library.cpp" "5_organize program_data/memOptim/main.cpp" "5_organize program_data/memOptim/grade.h" "5_organize program_data/memOptim/grade_funcs.cpp" "5_organize program_data/memOptim/Student_info.h" "5_organize program_data/memOptim/Student_info_funcs.cpp" "5_organize program_data/main.cpp" "6_UseIterator extract_fail.cpp" "7_Use library/find_url.cpp" "7_Use library/StudentGrades.cpp" "7_Use library/6-1.cpp" "7_Use library/using library.h" 8_CorrelatedContainer.cpp "7_Use library/StudentGrade.h" 8_MakeaSentence.cpp 9_Generics.cpp 10_define_new_class/10_define_new_class.cpp 10_define_new_class/10_define_new_class.h)