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--- cpp:templates [2019/05/04 04:47]
gthanos
+++ cpp:templates [2019/05/14 10:24]
gthanos
@@ Line 5: / Line 5: @@
   - [[cpp::class_templates_specialization| Εξειδίκευση ενός template]]
+Στα παραδείγματα που ακολουθούν χρησιμοποιούμε τη βοηθητική κλάση **Student** που δίνεται παρακάτω:
+<code cpp Student.hpp>
+#ifndef _STUDENT_HPP_
+#define _STUDENT_HPP_
+#include<cstring>
+class Student {
+  char *name;
+  int aem;
+public:
+  Student(const char *name, int aem);
+  Student();
+  Student(const Student& );
+  Student(const Student* );
+  ~Student();
+  char *getName() const;
+  int getAEM() const;
+  void setName(const char *name);
+  void setAEM(int aem);
+  friend std::ostream& operator<<(std::ostream& out, const Student & st);
+  bool operator>(const Student& st) const;
+  Student& operator=(const Student& st);
+};
+Student::Student(const char *name, int aem) {
+  this->name = new char [strlen(name) + 1];
+  strcpy(this->name, name);
+  this->aem = aem;
+}
+Student::Student(const Student& st) {
+  name = new char [strlen(st.name) + 1];
+  strcpy(name, st.name);
+  aem = st.aem;
+}
+Student::Student(const Student* st) {
+  name = new char [strlen(st->name) + 1];
+  strcpy(name, st->name);
+  aem = st->aem;
+}
+Student::Student() {
+  this->name = nullptr;
+  this->aem = 0;
+}
+Student::~Student() {
+  if(name != nullptr)
+    delete []name;
+}
+char* Student::getName() const {
+  return name;
+}
+int Student::getAEM() const {
+  return aem;
+}
+void Student::setName(const char *name) {
+  if(this->name != nullptr)
+    delete this->name;
+  this->name = new char [strlen(name) + 1];
+  strcpy(this->name, name);
+}
+void Student::setAEM(int aem) {
+  this->aem = aem;
+}
+Student& Student::operator=(const Student& st) {
+  if(name != nullptr)
+    delete name;
+  name = new char [strlen(st.name) + 1];
+  strcpy(name, st.name);
+  aem = st.aem;
+  return *this;
+}
+std::ostream& operator<<(std::ostream& out, const Student& st) {
+  if(st.name != nullptr)
+    out << st.name << " " << st.aem;
+  return out;
+}
+bool Student::operator>(const Student& st) const {
+  if(aem > st.aem)
+    return true;
+  return false;
+}
+#endif
+</code>

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