Practical file questions

pointers/new_function.cpp

@@ -0,0 +1,36 @@
+#include<iostream>
+using namespace std;
+struct student{
+	int roll;
+	char name[30];
+	float fees;
+};
+
+int main(){
+	student *s;
+	cout<<"\n\n\n Size of s :"<<sizeof(s);
+
+	s = new(student);
+
+	cout<<"\n Enter Roll :";
+	cin>>s->roll;
+
+	cout<<"\n Enter name :";
+	cin>>s->name;
+	cout<<"\n Enter fees :";
+	cin>>s->fees;
+
+	cout<<"\n\n\n Size of s :"<<sizeof(s);
+
+	cout<<"\n Roll No :"<<s->roll;
+	cout<<"\n Name    :"<<s->name;
+	cout<<"\n fees    :"<<s->fees;
+
+	delete(s);
+
+	cout<<"\n Roll No :"<<s->roll;
+	cout<<"\n Name    :"<<s->name;
+	cout<<"\n fees    :"<<s->fees;
+
+	return 0;
+}

pointers/self_referenceial.cpp

@@ -0,0 +1,17 @@
+#include<iostream>
+using namespace std;
+
+struct student{                 //self referenceial structure
+	int roll;
+	char name[30];
+	float fees;
+	student *ptr;
+};
+
+int main(){
+
+	student 
+	return 0;
+}
+
+

structure_pointer.cpp

@@ -0,0 +1,26 @@
+#include<iostream>
+using namespace std;
+struct student{
+	int roll;
+	char name[30];
+	float fees;
+};
+
+int main(){
+	student s ={10,"Swapnil",3456.96};
+	cout<<"\n Roll No :"<<s.roll;
+	cout<<"\n Name    :"<<s.name;
+	cout<<"\n fees    :"<<s.fees;
+
+	cout<<"\n\n\n Size of s :"<<sizeof(s);
+
+	student *s1 = &s;
+
+	cout<<"\n Roll No :"<<s1->roll;
+	cout<<"\n Name    :"<<s1->name;
+	cout<<"\n fees    :"<<s1->fees;
+
+	cout<<"\n Size of s1 :"<<sizeof(s1);
+
+	return 0;
+}