#include<iostream.h>
#include<conio.h>
#include<fstream.h>
#include<stdio.h>
#include<string.h>
#include<process.h>
class employee
{
int eid;
char ename[20];
char empaddr[30];
char empdesig[20];
float sal;
public:
void getdata();
void putdata();
int return_id()
{
return eid;
}
}s;
ifstream fin;
ofstream fout;
void employee::getdata()
{
cout<<"\n Enter Employee ID : ";cin>>eid;
cout<<"\nEnter Employee Name : ";gets(ename);
cout<<"\n Enter Address : ";gets(empaddr);
cout<<"\n Enter Designation : ";gets(empdesig);
cout<<"\n Enter Salary : ";cin>>sal;
}
void employee::putdata()
{
cout<<"\n----EMPLOYEE DETAILS----";
cout<<"\n Employee ID = "<<eid;
cout<<"\nEmployee Name = "<<ename;
cout<<"\n Address = "<<empaddr;
cout<<"\n Deisgnation = "<<empdesig;
cout<<"\n Salary = "<<sal;
}
void create()
{
int n;
fout.open("record.dat",ios::out|ios::binary);
cout<<"\nEnter Number of Employees"
<<"to be Added : ";
cin>>n;
for(int i=0;i<n;i++)
{
cout<<"\nEnter Details of Employee "<<i+1;
cout<<"\n-----------------------------";
s.getdata();
fout.write((char *)&s,sizeof(s));
cout<<"\nDetails are Added to File Successfully";
}
fout.close();
}
void append()
{
fout.open("record.dat",ios::app|ios::binary);
cout<<"\n---Enter the Details to be Appended---";
s.getdata();
fout.write((char *)&s,sizeof(s));
fout.close();
}
void display()
{
fin.open("record.dat",ios::in|ios::binary);
while(fin.read((char *)&s,sizeof(employee)))
if(!fin.eof()) s.putdata();
fin.close();
}
void modify()
{
int flag=0;
fstream f;
f.open("record.dat",ios::in|ios::out|ios::binary);
long pos;
int g;
employee s;
cout<<"\nEnter the ID to modify : ";cin>>g;
while(f)
{
pos=f.tellg();
f.read((char *)&s,sizeof(s));
if(s.return_id()==g)
{
s.getdata();
flag=1;
f.seekg(pos);
f.write((char *)&s,sizeof(s));
}
}
if(flag==0)
{
cout<<"\nSorry ID not found";
}
f.close();
}
void main()
{
int c;
do
{
clrscr();
cout<<"\n----MENU----";
cout<<"\n1.Create\n2.Display\n3.Append"
<<"\n4.Modify\n5.Exit";
cout<<"\nEnter your choice : ";cin>>c;
switch(c)
{
case 1: create();
break;
case 2: display();
break;
case 3: append();
cout<<"\nNew Details are added";
break;
case 4: modify();
break;
case 5: exit(0);
default: cout<<"\nWrong choice!!!";
}
cout<<"\nPress any key to continue";
getch();
}while(1);
}
CPP Menu driven program for maintaining EMPLOYEE details
CPP Program for mantaining BOOK Details
#include<iostream.h>
#include<fstream.h>
#include<conio.h>
#include<process.h>
#include<stdio.h>
class book
{
int bno;
char bname[30];
int price;
public:
void input()
{ cout<<"\nEnter Book Number : ";
cin>>bno;
cout<<"\nEnter Book Name : ";
gets(bname);
cout<<"\nEnter the Price : ";
cin>>price;
}
void display()
{
cout<<"\nBook Number : "<<bno;
cout<<"\nBook Name : "<<bname;
cout<<"\nBook Price : Rs"<<price;
}
int getbno()
{
return bno;
}
};
void main()
{
book b;
int n, i, j, choice;
fstream file;
char ch;
do
{
clrscr();
cout<<"\n----MENU----";
cout<<"\n1.Enter Details of Book\n2.Display the Details"
<<"\n3.Search for Book\n4.Exit";
cout<<"\nEnter your choice : ";
cin>>choice;
switch(choice)
{
case 1: file.open("bk.dat",ios::out|ios::binary);
cout<<"\nEnter Number of Records to be Stored : ";
cin>>n;
for(i=0;i<n;i++)
{
b.input();
file.write((char *)&b,sizeof(b));
}
file.close();
break;
case 2: file.open("bk.dat",ios::in|ios::binary);
cout<<"\nThe Details are ";
cout<<"\n---------------";
do
{
file.read((char *)&b,sizeof(b));
if(!file.eof()) b.display();
cout<<"\n";
}while(file);
file.close();
break;
case 3: int bn,flag=0;
cout<<"\nEnter the Book Number to be Searched : ";
cin>>bn;
file.open("bk.dat",ios::in|ios::binary);
while(file)
{
file.read((char *)&b,sizeof(b));
if(bn==b.getbno())
{
b.display();
flag=1;
break;
}
}
if(flag==0)
cout<<"\nNo Recors Found";
file.close();
break;
case 4: exit(0);
default: cout<<"\nWrong choice!!!";
}
cout<<"\nPress any key to continue";
getch();
}while(1);
}
Maintaining STUDENT records in a file - C++ Program
#include<iostream.h>
#include<fstream.h>
#include<conio.h>
#include<stdio.h>
#include<process.h>
#include<ctype.h>
class student
{
char name[30];
int rollno;
int marks;
public:
void input()
{
cout<<"\nEnter Name : ";
gets(name);
cout<<"\nEnter Rollno : ";
cin>>rollno;
cout<<"\n Enter Marks : ";
cin>>marks;
}
void display()
{
cout<<"\n"<<name<<"\t"<<rollno<<"\t"<<marks;
if(marks>=96)
cout<<"\tComputer SC";
else if(marks>=91&&marks<90)
cout<<"\tElectronics";
else if(marks>=86&&marks<=90)
cout<<"\tMechanical";
else if(marks>=81&&marks<=85)
cout<<"\tElectrical";
else if(marks>=76&&marks<=80)
cout<<"\tChemical";
else if(marks>=71&&marks<=75)
cout<<"\tCivil";
else
cout<<"\tNone";
}
};
void main()
{
clrscr();
student s;
int i, j, n, ch;
fstream ofile, afile;
char ch1;
do
{
clrscr();
cout<<"\n----MENU----";
cout<<"\n1.Add Record\n2.Show Record"
<<"\n3.Exit";
cout<<"\nEnter your choice : ";
cin>>ch;
switch(ch)
{
case 1: ofile.open("ST.dat",ios::app|ios::binary);
cout<<"\nEnter number of records to be entered : ";
cin>>n;
for(i=0;i<n;i++)
{
s.input();
ofile.write((char *)&s,sizeof (s));
}
ofile.close();
break;
case 2: cout<<"\nName\tRollno\tMarks\tStream";
afile.open("ST.dat",ios::in|ios::binary);
while(afile)
{
afile.read((char *)&s,sizeof (s));
if(!afile)
break;
s.display();
}
afile.close();
break;
case 3: exit(0);
default: cout<<"\nWrong choice!!!";
}
cout<<"\nPress any key to cotinue";
getch();
}while(1);
}
Menu driven C++ program for writing, reading a file and writing vowels in another file
#include<fstream.h>
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<process.h>
#include<ctype.h>
void main()
{
clrscr();
int n,choice, flag;
fstream file1,file2;
char str[256];
char ch;
do
{
clrscr();
cout<<"\n---MENU---\n1.Write text to the first file"
<<"\n2.Read text from first file\n3.Write vowels to the second file"
<<"\n4.Display the second file\n5.Exit";
cout<<"\nEnter your choice : ";
cin>>choice;
switch(choice)
{
case 1: file1.open("smp1.txt",ios::out);
cout<<"\nEnter the text : ";
gets(str);
file1<<str;
file1.close();
cout<<"\nFile1 Created successfully";
break;
case 2: file1.open("smp1.txt",ios::in);
while(file1)
{
file1.get(ch);
cout<<ch;
}
file1.close();
break;
case 3: file1.open("smp1.txt",ios::in);
file2.open("smp2.txt",ios::out);
while(file1.eof()==0)
{
file1.get(ch);
if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u'||ch=='A'||ch=='E'||ch=='I'||ch=='O'||ch=='U')
file2.put(ch);
}
file1.close();
file2.close();
cout<<"\nFile 2 is created with vowels from File 1";
break;
case 4: file2.open("smp2.txt",ios::in);
cout<<"\nLower case vowels : ";
flag=0;
while(file2)
{
file2.get(ch);
if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u')
{
cout<<ch;
flag=1;
}
}
if(flag==0)
cout<<"\nNo lower case vowels";
cout<<"\nUpper case vowels : ";
flag=0;
file2.close();
file2.open("smp2.txt",ios::in);
while(file2)
{
file2.get(ch);
if(ch=='A'||ch=='E'||ch=='I'||ch=='O'||ch=='U')
{
cout<<ch;
flag=1;
}
}
if(flag==0)
cout<<"\nNo upper case vowels";
break;
case 5: exit(0);
default: cout<<"\nWrong choice!!!";
break;
}
cout<<"\nPress any key to continue";
getch();
} while(1);
}
Program for printing the Upper and Lower triangular matrices of a square matrix (for Plus2 Students)
#include<iostream.h>
#include<conio.h>
#include<process.h>
void l_triangle(int a[30][30], int n)
{
int i=0, j=0;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
if(i>=j)
cout<<a[i][j]<<" ";
else
cout<<" ";
}
cout<<"\n";
}
}
void u_triangle(int a[30][30], int n)
{
int i=0, j=0;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
if(i<=j)
cout<<a[i][j]<<" ";
else
cout<<" ";
}
cout<<"\n";
}
}
void main()
{
clrscr();
int i, j, a[30][30], r, c; char ch;
do
{
cout<<"\n\nMENU\n\n";
cout<<"1. Enter elements\n2. Display matrix"
<<"\n3. Display upper triangle\n4. Display lower triangle"
<<"\n5. Exit";
cout<<"\nEnter your choice ";
cin>>c;
switch(c)
{
case 1: cout<<"\nEnter row and column(square matrix only)";
cin>>r>>c;
cout<<"\nEnter the elements";
for(i=0;i<r;i++)
{for(j=0;j<c;j++)
cin>>a[i][j];
}
break;
case 2: cout<<"\nMatrix is";
for(i=0;i<r;i++)
{
cout<<"\n";
for(j=0;j<r;j++)
cout<<a[i][j]<<" ";
}
break;
case 3: cout<<"\nUpper triangle matrix\n";
u_triangle(a,r);
break;
case 4: cout<<"\nLower triangle matrix\n";
l_triangle(a,r);
break;
case 5: cout<<"\nExit";
exit(0);
default: cout<<"\nWrong choice";
}
cout<<"\nDo you want to continue";
cin>>ch;
}while( ch=='Y'|| ch=='y');
getch();
}
Subscribe to:
Posts (Atom)