V tej vadnici se bomo naučili predati predmete funkciji in vrniti predmet iz funkcije v programiranju na C ++.
Pri programiranju na C ++ lahko predloge prenesemo v funkcijo na podoben način kot posredovanje običajnih argumentov.
Primer 1: C ++ posreduje predmete v funkcijo
// C++ program to calculate the average marks of two students #include using namespace std; class Student ( public: double marks; // constructor to initialize marks Student(double m) ( marks = m; ) ); // function that has objects as parameters void calculateAverage(Student s1, Student s2) ( // calculate the average of marks of s1 and s2 double average = (s1.marks + s2.marks) / 2; cout << "Average Marks = " << average << endl; ) int main() ( Student student1(88.0), student2(56.0); // pass the objects as arguments calculateAverage(student1, student2); return 0; )
Izhod
Povprečne ocene = 72
Tu smo Studentkot argumentaciji calculateAverage()funkciji predali dva predmeta student1 in student2 .
Posreduj predmete, da delujejo v jeziku C ++
Primer 2: C ++ Vrni objekt iz funkcije
#include using namespace std; class Student ( public: double marks1, marks2; ); // function that returns object of Student Student createStudent() ( Student student; // Initialize member variables of Student student.marks1 = 96.5; student.marks2 = 75.0; // print member variables of Student cout << "Marks 1 = " << student.marks1 << endl; cout << "Marks 2 = " << student.marks2 << endl; return student; ) int main() ( Student student1; // Call function student1 = createStudent(); return 0; )
Izhod
Oznake1 = 96,5 Oznake2 = 75
Vrni objekt iz funkcije v jeziku C ++
V tem programu smo ustvarili funkcijo, createStudent()ki vrne predmet Studentrazreda.
Klicali smo createStudent()iz main()metode.
// Call function student1 = createStudent();
Tu shranjujemo predmet, ki ga vrne createStudent()metoda, v student1.
