Shorted Bharathiar University C ++ Practical Programs for MCA 2nd year students
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C++ Programs List
1)To Perform Arithmetic And Relational Operators
Using Operator Overloading.
2)To Convert From Basic Data Type To Class Type
And Class Data Type To Basic
Data Type Using
Type Conversion.
3)To Implement String Copy ,String Length, Reverse
of String
Without String Function.
4)Pay Roll Using File Concept
5)Minimum and Maximum Using Template
6)Mark Statement Using Hybrid Inheritance
7) To Implement Polymorphism Using Integer
Series And
Countries Currency Class.
8)Finding Area Of Circle Using Friend Function
9)Matrix Manipulation using Pointer
10)Random Access Files
Programs
Program-1
(Operator Overloading)
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<stdlib.h>
class opera
{
int a,b;
public:
void input();
void output();
opera operator *(opera ob1);
void operator <(opera ob2);
};
void opera::input()
{
cout<<"\nEnter The Value
For A and B:";
cin>>a>>b;
}
void opera::output()
{
cout<<"\nA="<<a<<"\tB="<<b;
}
opera opera::operator *(opera ob1)
{
opera t;
t.a=a*ob1.a;
t.b=b*ob1.b;
return t;
}
void opera::operator<(opera ob2)
{
if((a<ob2.a)&&(b<ob2.b))
cout<<"\nA is Lessthen
B";
else
if((a>ob2.a)&&(b>ob2.b))
cout<<"\nB is Lessthen
A";
else
cout<<"\nInvalid No";
}
void main()
{
opera obj1,obj2;
int opt;
clrscr();
for(;;)
{
cout<<"\nOperating
Overloading\n**************************";
cout<<"\n1.Arith\n2.Relational\n3.exit";
cout<<"\nEnter Your
choice: ";
cin>>opt;
switch(opt)
{
case 1:
cout<<"\n\tArith";
obj1.input();
obj2.input();
opera obj3;
obj3=obj1*obj2;
obj3.output();
break;
case 2:
cout<<"\nRelational
";
obj1.input();
obj2.input();
obj1<obj2;
break;
case 3:
exit(0);
break;
default:
cout<<"\nYour Choice Is
Wrong Enter Right no";
}
}
}
Program-2
(Type Conversion)
#include<iostream.h>
#include<conio.h>
#include<math.h>
#include<stdlib.h>
#include<dos.h>
class sint
{
long int p,n,r;
double si;
public:
sint()
{
si=p=n=r=0;
}
sint(long int pi)
{
p=pi;
n=2;
r=5;
}
void output()
{
si=(p*n*r)/100;
cout<<"\nInterst Is
:"<<si;
}
operator double()
{
return si;
}
};
void main()
{
int opt;
clrscr();
for(;;)
{
clrscr();
cout<<"\nType
Conversion";
cout<<"\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
cout<<"\n1.from Basic Type
to Class";
cout<<"\n2.From Class Type
to Basic";
cout<<"\n3.Exit";
cout<<"\nEnter Your
Choice: ";
cin>>opt;
switch(opt)
{
case 1:
cout<<"\nType
Conversion\n~~~~~~~~~~~~~~~~~~~~~~~";
cout<<"\nFrom Basic Type To
Class Type ";
sint siob;
int amt;
cout<<"\nEnter the value
for Principle Amount:";
cin>>amt;
siob=amt;
siob.output();
sleep(3);
break;
case 2:
cout<<"\nType
Conversion\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
cout<<"\nFrom Class Type
To Basic Type ";
sint ob;
ob=25466;
double irt=ob;
cout<<"\nInterst Is:
"<<irt;
sleep(3);
break;
case 3:
cout<<"\nSuccessfully
Logout";
exit(0);
default:
cout<<"\nYour are Entered
Wrong Value";
sleep(3);
}
}
}
Program-3
(String Manipulation)
#include<stdio.h>
#include<conio.h>
#include<iostream.h>
#include<stdlib.h>
char str1[20],str2[20];
void strlength();
void strcomp();
void strcopy();
void strreverse();
void main()
{
int opt;
clrscr();
for(;;)
{
cout<<"\n\tString
Manipulation\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
cout<<"\n1.To String
Length";
cout<<"\n2.To String
Copy";
cout<<"\n3.To String
Reverse";
cout<<"\n4.Exit";
cout<<"\nEnter Your
Choice:";
cin>>opt;
switch(opt)
{
case 1:
cout<<"\n\tString
Length";
strlength();
break;
case 2:
cout<<"\n\tString
Copy";
strcopy();
break;
case 3:
cout<<"\n\tReverse Of The
String";
strreverse();
break;
case 4:
exit(0);
default:
cout<<"\nYou Entered Wrong
Value Enter Right keyword";
}
}
}
void strlength()
{
cout<<"\nEnter THe String:
";
cin>>str1;
int i=0,len=0;
while(str1[i]!='\0')
{
len=len+1;
i++;
}
cout<<"\nThe Given String
is :"<<str1;
cout<<"\nLength Of The
String:"<<len;
}
void strcopy()
{
cout<<"\nEnter The First
String:";
cin>>str1;
int i=0;
while(str1[i]!='\0')
{
str2[i]=str1[i];
i++;
}
str2[i]='\0';
cout<<"\nThe Given String
Is:"<<str1;
cout<<"\nThe Copied String
Is :"<<str2;
}
void strreverse()
{
cout<<"\nEnter The
String:";
cin>>str1;
cout<<"\nThe Given String
Is :"<<str1;
int i=0,len=0;
while(str1[i]!='\0')
{
len=len+1;
i++;
}
cout<<"\nReverse Of The
String: ";
for(i=len;i>=0;i--)
cout<<str1[i];
}
Program-4
(Pay Roll Using File Concept)
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
#include<dos.h>
#include<math.h>
class emp
{
int empno,bpay;
float
da,hra,ta,lic,ded,npay,gpay,allow,pf;
char ename[20];
public:
emp()
{
ta=hra=da=lic=pf=ded=npay=gpay=allow=0;
}
void get();
void put();
void calc();
};
void emp:: get()
{
cout<<"\nEnter The Empno
and Name and BasicPay: ";
cin>>empno>>ename>>bpay;
}
void emp::calc()
{
da=abs(bpay*80/100);
hra=abs(bpay*30/100);
ta=abs(bpay*20/100);;
pf=abs(bpay*12/100);;
lic=abs(bpay*5/100);
ded=abs(lic+pf);
allow=abs(allow+da+hra+ta);
gpay=abs(bpay+allow);
npay=abs(gpay-ded);
}
void emp::put()
{
clrscr();
cout<<"\nPayRoll";
cout<<"\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
cout<<"\nEmployeeNumber:
"<<empno<<"\nName:
<<ename <<"\nBasicPay:
"<<bpay;
cout<<"\nAllowance:
"<<allow<<"\nDection:
"<<ded
<<"\nNetpay: "<<npay;<<"\nGrossPay:"<<gpay
<<"\n~~~~~~~~~~~~~~~~~~~~~~~";
}
void main()
{
emp e;
char opt;
fstream fob;
clrscr();
fob.open("emp.dat",ios::in|ios::out|ios::app);
do
{
e.get();
fob.write((char*)&e,sizeof(e));
cout<<"\nDo you Wnat TO
Continue(y/n):";
cin>>opt;
}while(opt=='Y'||opt=='y');
clrscr();
fob.seekg(0);
fob.read((char*)&e,sizeof(e));
while(!fob.eof())
{
e.calc();
e.put();
fob.read((char*)&e,sizeof(e));
}
getch();
}
Program-5
(Minimum and Maximum Using Template)
#include<iostream.h>
#include<conio.h>
template<class x>void minmax(x
a1[],int n)
{
x min,max;
min=max=a1[0];
for(int i=0;i<n;i++)
{
if(a1[i]<min)
{
min=a1[i];
}
if(a1[i]>max)
{
max=a1[i];
}
}
cout<<"\n\nMaximum
="<<max<<"\tMinimax ="<<min;
};
void main()
{
int a[10],n,i;
clrscr();
cout<<"\nEnter The Value
for n: ";
cin>>n;
cout<<"\nEnter
"<<n<<"Integer Value one by one:";
for(i=0;i<n;i++)
cin>>a[i];
cout<<"\nGiven Value For
Integer Array:";
for(i=0;i<n;i++)
cout<<a[i]<<"\n";
cout<<"\nMaximum And
Minimum Values In Integer Array";
minmax(a,n);
double b[10];
cout<<"\nEnter The Value
For n: ";
cin>>n;
cout<<"\nEnter
"<<n<<" Float value one by one";
for(i=0;i<n;i++)
cin>>b[i];
cout<<"\nGiven Values For
Float Array: ";
for(i=0;i<n;i++)
cout<<b[i]<<"\n";
cout<<"\nMaximum and
Minimum Value In Float Array";
minmax(b,n);
getch();
}
Program-6
(Mark Statement Using Hybrid Inheritance)
#include<iostream.h>
#include<conio.h>
#include<string.h>
int i=0,x=5,y=5;
class base
{
protected:
int rno;
char name[20];
char scode[5][5],sname[5][20];
public:
void input();
void output();
};
class internal:public virtual base
{
protected:
int intmar[5];
public:
void input2();
void output2();
};
class external:public base
{
protected:
int extmar[5];
public:
void input3();
void output3();
};
class result:public internal,public
external
{
int tot[5];
char rst[5][5];
public:
void process();
void display();
};
void base::input()
{
cout<<"\nEnter Rno and
Name:";
cin>>rno>>name;
cout<<"Enter 5 Subject
Codes and subject names:";
for(i=0;i<5;i++)
cin>>scode[i]>>sname[i];
}
void internal::input2()
{
input();
cout<<"\nEnter 5 Subject
Internal Marks";
for(i=0;i<5;i++)
cin>>intmar[i];
}
void external::input3()
{
cout<<"\nEnter The
External Marks";
for(i=0;i<5;i++)
cin>>extmar[i];
}
void base::output()
{
cout<<"\nReg
no:"<<rno;
cout<<"\nNmae:"<<name;
cout<<"\nSubject
Code:";
for(i=0;i<5;i++)
cout<<scode[i]<<"
";
cout<<"\n Subject
Names:";
for(i=0;i<5;i++)
cout<<sname[i]<<"
" ;
}
void internal::output2()
{
output();
cout<<"\nInternal
Marks";
for(i=0;i<5;i++)
cout<<"\n"<<intmar[i]<<"
";
}
void external::output3()
{
cout<<"\nExternal
Marks";
for(i=0;i<5;i++)
cout<<"\n"<<extmar[i]<<"
";
}
void result::display()
{
output3();
cout<<"\nTotal
Marks:";
for(i=0;i<5;i++)
cout<<tot[i]<<"
";
cout<<"\nResult :";
for(i=0;i<5;i++)
cout<<rst[i]<<"
";
}
void result::process()
{
int j;
for(j=0;j<5;j++)
tot[j]=0;
for(j=0;j<5;j++)
{
tot[j]=tot[j]+intmar[j]+extmar[j];
if(intmar[j]>11&&extmar[j]>37&&tot[j]>49)
strcpy(rst[j],"pass");
else
strcpy(rst[j],"Fail");
}
}
void main()
{
result ob;
clrscr();
ob.input2();
ob.input3();
ob.process();
clrscr();
cout<<"\nStudent Result Is
Processed";
ob.output2();
ob.display();
getch();
}
Program-7
(Polymorphism)
#include<iostream.h>
#include<conio.h>
#include<math.h>
#include<stdlib.h>
class base
{
public:
virtual void input()=0;
virtual void output()=0;
};
class insert:public base
{
int n,sum1,sum2,sum3;
public:
void input();
void output();
};
class currence:public base
{
float uk,irp,us,ero,pk,chi,quwt,sri;
public:
void input();
void output();
};
class percom:public base
{
int n,r;
long int ncr,npr,fact;
public:
void input();
int facto(int n1);
void output();
};
void insert::input()
{
cout<<"\Enter Value For
n:";
cin>>n;
}
void insert::output()
{
sum1=sum2=sum3=0;
sum1=sum1+n*(n+1)/2;
sum2=sum2+n*(n+1)*(2*n+1)/6;
sum3=sum3+sqrt(n*(n+1));
cout<<"\n\t1+2+3...........+"<<n<<":="<<sum1;
cout<<"\n\t1^2+2^2+3^2...........+"<<n<<"^2:="<<sum2;
cout<<"\n\t1^3+2^3+3^3...........+"<<n<<"^3:="<<sum3;
}
void percom::input()
{
cout<<"\n\tEnter The Value
for n(object) and r(time): ";
cin>>n>>r;
}
void currence::input()
{
cout<<"\nENter The amount
Of Indian Currency:";
cin>>irp;
}
void currence::output()
{
uk=irp/99.73;
us=irp/62.17;
ero=irp/84.16;
pk=irp/0.59;
sri=irp/0.47;
quwt=irp/219.36;
chi=irp/10.16;
cout<<"\nIndian Reupees
.........:"<<irp;
cout<<"\nEqulient Uk
Bound: "<<uk;
cout<<"\nEqulient Us
Dollor: "<<us;
cout<<"\nEqulient Europ
Rate: "<<ero;
cout<<"\nEqulient Kuwail
Dinar: "<<quwt;
cout<<"\nEqulient China
Rupee: "<<chi;
cout<<"\nEqulient
Pakisthan Rupee: "<<pk;
cout<<"\nEqulient Sirlank
Rupee: "<<sri;
}
void main()
{
int opt;
base *pt;
for(;;)
{
clrscr();
cout<<"\n\tPolymorphisam
With Virtual Function";
cout<<"\n\t\t1.Integer
Series";
cout<<"\n\t\t2.Contrieses
Currenices:";
cout<<"\n\t\t3.Exit";
cout<<"\nEnter Your
Choice: ";
cin>>opt;
switch(opt)
{
case 1:
cout<<"\n\t Integer
Series";
insert ob1;
pt=&ob1;
pt->input();
pt->output();
getch();
break;
case 2:
cout<<"\nContries and
Currencies";
currence ob3;
pt=&ob3;
pt->input();
pt->output();
getch();
break;
case 3:
exit(0);
break;
default:
cout<<"\nEntered Wrong
value";
}
}
}
Program-8
(Finding Area Of Circle Using Friend Function)
#include<iostream.h>
#include<conio.h>
#define pi 3.4;
class circ;
class rect
{
float l,b;
float ar;
public:
rect(float x,float y);
friend float area(rect r,circ c);
};
class circ
{
float r,ar;
public:
circ(float ra);
friend float area(rect r,circ c);
}
rect::rect(float x,float y)
{
l=x;
b=y;
ar=l*b;
}
circ::circ(float ra)
{
r=ra;
}
float area(rect r,circ c)
{
float a=r.ar-c.ar;
return a;
}
void main()
{
rect obr(12,15);
circ obc(5);
clrscr();
cout<<"\nAre Outside The
Circle: "<<area(obr,obc);
getch();
}
Program-9
(Matrix Using Pointer)
#include<iostream.h>
#include<conio.h>
#include<process.h>
int **malloc(int ro,int col);
void disp(int **a,int raw,int col);
void matmult(int **a,int m,int n,int
**b,int p,int q,int **c);
void matread(int **a,int row,int
col);
void memfree(int **p,int ro);
void main()
{
int **a,**b,**c,m,n,p,q;
clrscr();
cout<<"\nEnter Matrix A
Details:";
cin>>n>>m;
a=malloc(n,m);
matread(a,m,n);
cout<<"\nEnter Matrix B
Details:";
cin>>p>>q;
b=malloc(p,q);
matread(b,p,q);
c=malloc(m,q);
matmult(a,m,n,b,p,q,c);
cout<<"\nMatrix
A("<<n<<"*"<<m<<")";
disp(a,m,n);
cout<<"\nMatrix
B("<<p<<"*"<<q<<")";
disp(b,p,q);
cout<<"\nMatrix
C=A*B";
disp(c,n,q);
getch();
}
void disp(int **a,int row,int col)
{
int i,j;
for(i=0;i<row;i++)
{
cout<<endl;
for(j=0;j<col;j++)
cout<<a[i][j]<<"\t";
}
}
int **malloc(int ro,int col)
{
int **p;
p=new int*[20];
for(int i=0;i<ro;i++)
p[i]=new int[col];
return p;
}
void memfree(int **p,int ro)
{
for(int i=0;i<ro;i++)
delete p[i];
delete p;
}
void matread(int **a,int row,int col)
{
int i,j;
for(i=0;i<row;i++)
{
for(j=0;j<col;j++)
{
cout<<"\nMatrix
["<<i<<","<<j<<"]=";
cin>>a[i][j];
}
}
}
void matmult(int **a,int m,int n,int
**b,int p,int q,int **c)
{
int i,j;
if(n!=p)
{
cout<<"\nError Invalid
Matrix Order: ";
exit(1);
getch();
}
for(i=0;i<m;i++)
{
for(j=0;j<q;j++)
{
c[i][j]=0;
c[i][j]=a[i][j]*b[i][j];
}
}
}
Program-10
(Random Access Files)
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
class stu
{
int rno;
char name[15];
public:
void get()
{
cout<<"\nEnter The
Rno,name:";
cin>>rno>>name;
}
void put()
{
cout<<"\nReg
no:"<<rno<<"\tName:"<<name;
}
};
void main()
{
clrscr();
char opt;
stu s;
fstream f;
f.open("stud.dat",ios::in|ios::out|ios::app);
do
{
clrscr();
s.get();
f.write((char *)&s,sizeof(s));
cout<<"\n Do you Wnat To
Continue(y/n): ";
cin>>opt;
}while(opt=='Y'||opt=='y');
f.seekg(0,ios::cur);
int p=f.tellg();
int nr=p/sizeof(s);
cout<<"\n"<<nr<<"
Record in the file";
cout<<"\nEnter the record
no:";
int n;
cin>>n;
int po=(n-1)*sizeof(s);
f.seekg(po);
f.read((char *)&s,sizeof(s));
s.put();
getch();
}
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