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![//C++ program using class
#include<iostream.h>
#include<stdio.h>
#include<conio.h>
class Student
{
private:
int rollno;
char name[25];
float marks;
char grade;
public:
void readStudent()
{
cout<<"n Enter Roll no.:";
cin>> rollno;
cout<<"n Enter name :";
gets(name);
cout<<"n Enter marks :" ;
cin>> marks;
}
void dispStudent()
{
calcGrade();
cout<<"n Roll no. : "<<rollno;
cout<<"n Name :"<<name;
cout<<"n Marks :"<<marks;
cout<<"n Grade :";
}
int getRollno()
{
return rollno;
}
float getMarks()
{
return marks;
}
void calcGrade()
{
if (marks>=75)
grade='0';
else if (marks >=60)
grade = 'A';
else if (marks >=50)
grade='B';
else if (marks >=40)
grade ='C';
else
grade= 'F';
}
};
void main()
{Student XIIa[10];
for(int i=0; i<10; ++i)
{
cout<<"n Enter the details of student"<<i+1<<":";
XIIa[i].readStudent();
}
int choice, rno, pos=-1, highmarks=0;
do
{
clrscr();
cout<<"nnn Main menunn";](https://image.slidesharecdn.com/cprogramusingclass-140115222614-phpapp01/85/C-program-using-class-1-320.jpg)
![cout<<"n 1. Specific student";
cout<<"n 2. Topper";
cout<<"n 3. Exit ";
cout<<"n Enter your choice";
cin>> choice;
switch(choice)
{
case 1: cout<<"n Enter roll no. of student whose details you want to see:";
cin>>rno;
for(i=0; i<10; ++i)
{
if (XIIa[i].getRollno()==rno)
{XIIa[i].dispStudent();
break;
}
}
if (i==10)
cout<<"n INVALID ROLLNO.!!!!!!!!";
getch();
break;
case 2: for( i=0; i<10; ++i)
{
if(XIIa[i].getMarks()>highmarks)
{
pos=i;
highmarks=XIIa[i].getMarks();
}
}
XIIa[pos].dispStudent();
getch();
break;
case 3: break;
default: cout<<"n nnnnn WRONG CHOICE!!!!!!!!!!!!!nnnnnnn";
}
} while(choice>=1&& choice <3);
}](https://image.slidesharecdn.com/cprogramusingclass-140115222614-phpapp01/85/C-program-using-class-2-320.jpg)
![//C++ program using class
#include<iostream.h>
#include<stdio.h>
#include<conio.h>
class Student
{
private:
int rollno;
char name[25];
float marks;
char grade;
public:
void readStudent()
{
cout<<"n Enter Roll no.:";
cin>> rollno;
cout<<"n Enter name :";
gets(name);
cout<<"n Enter marks :" ;
cin>> marks;
}
void dispStudent()
{
calcGrade();
cout<<"n Roll no. : "<<rollno;
cout<<"n Name :"<<name;
cout<<"n Marks :"<<marks;
cout<<"n Grade :";
}
int getRollno()
{
return rollno;
}
float getMarks()
{
return marks;
}
void calcGrade()
{
if (marks>=75)
grade='0';
else if (marks >=60)
grade = 'A';
else if (marks >=50)
grade='B';
else if (marks >=40)
grade ='C';
else
grade= 'F';
}
};
void main()
{Student XIIa[10];
for(int i=0; i<10; ++i)
{
cout<<"n Enter the details of student"<<i+1<<":";
XIIa[i].readStudent();
}
int choice, rno, pos=-1, highmarks=0;
do
{
clrscr();
cout<<"nnn Main menunn";](https://image.slidesharecdn.com/cprogramusingclass-140115222614-phpapp01/75/C-program-using-class-1-2048.jpg)
![cout<<"n 1. Specific student";
cout<<"n 2. Topper";
cout<<"n 3. Exit ";
cout<<"n Enter your choice";
cin>> choice;
switch(choice)
{
case 1: cout<<"n Enter roll no. of student whose details you want to see:";
cin>>rno;
for(i=0; i<10; ++i)
{
if (XIIa[i].getRollno()==rno)
{XIIa[i].dispStudent();
break;
}
}
if (i==10)
cout<<"n INVALID ROLLNO.!!!!!!!!";
getch();
break;
case 2: for( i=0; i<10; ++i)
{
if(XIIa[i].getMarks()>highmarks)
{
pos=i;
highmarks=XIIa[i].getMarks();
}
}
XIIa[pos].dispStudent();
getch();
break;
case 3: break;
default: cout<<"n nnnnn WRONG CHOICE!!!!!!!!!!!!!nnnnnnn";
}
} while(choice>=1&& choice <3);
}](https://image.slidesharecdn.com/cprogramusingclass-140115222614-phpapp01/75/C-program-using-class-2-2048.jpg)
Uploaded bySwarup Boro
C++ program using class
This C++ program defines a Student class with private data members like roll number, name, marks, and grade. It has public member functions to read student details, display student details, get roll number, and get marks. The calcGrade() function calculates the grade based on marks. The main() function creates an array of 10 Student objects, reads their details, and provides a menu to display details of a specific student by roll number or the topper. It loops until the user exits.
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C++ program using class
- 1. //C++ program usingclass #include<iostream.h> #include<stdio.h> #include<conio.h> class Student { private: int rollno; char name[25]; float marks; char grade; public: void readStudent() { cout<<"n Enter Roll no.:"; cin>> rollno; cout<<"n Enter name :"; gets(name); cout<<"n Enter marks :" ; cin>> marks; } void dispStudent() { calcGrade(); cout<<"n Roll no. : "<<rollno; cout<<"n Name :"<<name; cout<<"n Marks :"<<marks; cout<<"n Grade :"; } int getRollno() { return rollno; } float getMarks() { return marks; } void calcGrade() { if (marks>=75) grade='0'; else if (marks >=60) grade = 'A'; else if (marks >=50) grade='B'; else if (marks >=40) grade ='C'; else grade= 'F'; } }; void main() {Student XIIa[10]; for(int i=0; i<10; ++i) { cout<<"n Enter the details of student"<<i+1<<":"; XIIa[i].readStudent(); } int choice, rno, pos=-1, highmarks=0; do { clrscr(); cout<<"nnn Main menunn";
- 2. cout<<"n 1. Specificstudent"; cout<<"n 2. Topper"; cout<<"n 3. Exit "; cout<<"n Enter your choice"; cin>> choice; switch(choice) { case 1: cout<<"n Enter roll no. of student whose details you want to see:"; cin>>rno; for(i=0; i<10; ++i) { if (XIIa[i].getRollno()==rno) {XIIa[i].dispStudent(); break; } } if (i==10) cout<<"n INVALID ROLLNO.!!!!!!!!"; getch(); break; case 2: for( i=0; i<10; ++i) { if(XIIa[i].getMarks()>highmarks) { pos=i; highmarks=XIIa[i].getMarks(); } } XIIa[pos].dispStudent(); getch(); break; case 3: break; default: cout<<"n nnnnn WRONG CHOICE!!!!!!!!!!!!!nnnnnnn"; } } while(choice>=1&& choice <3); }