STRING OPERATIONS || CPP

STRING OPERATIONS USING CPP

CODE :-

#include
#include
#include
using namespace std;
class operation
{
private:
char a[15];
public:
void getdata()
{
cout<<"\nENTER A STRING: ";
cin>>a;
}
void copy()
{
char b[15];
strcpy(b,a);
cout<<"\nTHE STRING IS COPIED FROM a WHICH IS "<}
void length()
{
int l;
l=strlen(a);
cout<<"\nLENGHT OF STRING: "<}
void cmp()
{
char b[15];
int l;
cout<<"\n ENTER A STRING YOU WANT TO COMPARE: ";
cin>>b;
l=strcmp(a,b);
if(l==0)
{
cout<<"\nEQUAL";
}
else
{
cout<<"\n NOT EQUAL!";
}
}
void cat ()
{
char b[15], a[15];
cout<<"\n ENTER A STRING YOU WANT TO JOIN: ";
cin>>a;
cout<<"\nENTER ANOTHER STRING YOU WANT TO JOIN: ";
cin>>b;
strcat(a,b);
cout<<"\nTHE STRING WILL BE: "<}
void count()
{
int count =0, i=0;
char x;
cout<<"\nENTER ANY CHARACTER: ";
cin>>x;
while(a[i]!='\0')
{
if(a[i]==x)
{
count++;
}
i++;
}
cout<<"\nOCCURENCE OF "<}
};
int main()
{
operation s;
int ch;
cout<<"\n\t\n\t*********STRING OPERATIONS************";
s.getdata();
while(1)
{
cout<<"\n\t\nSELECT AN OPERATION YOU WANT TO PERFORM ON THE STRING:"
" \n1.COPY A STRING IN ANOTHER VARRIABLE"<<
"\n2.MEASURE THE LENGHT OF STRING\n"
"3.COMPARE A STRING WITH ANOTHER \n"
"4.JOIN TWO STRING\n"
"5. COUNT A LETTER IN THE STRING \n"
"6. EXIT: ";
cin>>ch;
switch(ch)
{
case 1:
s.copy();
break;
case 2:
s.length();
break;
case 3:
s.cmp();
break;
case 4:
s.cat();
break;
case 5:
s.count();
break;
case 6:
exit(0);
break;
default:
cout<<"\nINVALID";
break;
}
}
return 0;
}

OUTPUT :-

*********STRING OPERATIONS************
ENTER A STRING: SANTOSH

SELECT AN OPERATION YOU WANT TO PERFORM ON THE STRING:
1.COPY A STRING IN ANOTHER VARRIABLE
2.MEASURE THE LENGHT OF STRING
3.COMPARE A STRING WITH ANOTHER
4.JOIN TWO STRING
5. COUNT A LETTER IN THE STRING
6. EXIT:

FILE HANDLING || TELIPHONE DIERY || C++

CODE :

#include
#include
#include
#include
#include
using namespace std;
class phonebook
{
char name[20],phno[15];
public:
void getdata()
{
cout<<"\n enter name : ";
cin>>name;
cout<<"\n enter number : ";
cin>>phno;
}
void display()
{
cout<
cout<
cout<
}
char *getname()
{
return name;
}
char *getphno()
{
return phno;
}
void update(char *nm,char *telno)
{
strcpy(name,nm);
strcpy(phno,telno);
}
};
int main()
{
phonebook rec;
fstream file;
file.open("/home/student/Desktopphone.data",ios::ate | ios::in | ios::binary);
char ch,nm[30],telno[14];
int choice,found=0;
int cnt=0;
while(1)
{
cout<<"\n\n\n\n********** #Phone Book# ***********\n";
cout<<"1. Add New Record \n";
cout<<"2. Display All Record \n";
cout<<"3. Search Telephone No. \n";
cout<<"4. Search Person name \n";
cout<<"5. Update Telephone No. \n";
cout<<"6. Exit \n";
cout<<"Enter choice : ";
cin>>choice;
switch(choice)
{
case 1:
rec.getdata();
cin.get(ch);
file.write((char *) &rec, sizeof(rec));
break;
case 2:
file.seekg(0,ios::beg);
cout<<"\n\n REcords in Phone Book \n";
while(file)
{
file.read((char *) &rec, sizeof(rec));
if(!file.eof())
rec.display();
}
file.clear();
getchar();
break;
case 3:
cout<<"\n\n Enter Name : ";
cin>>nm;
file.seekg(0,ios::beg);
found=0;
while(file.read((char *) &rec, sizeof(rec)))
{
if(strcmp(nm,rec.getname())==0)
{
found=1;
rec.display();
}
}
file.clear();
if(found==0)
cout<<"\n\n -----Record Not Found----- \n";
getchar();
break;
case 4:
cout<<"\n\n Enter Telephone No. : ";
cin>telno;
file.seekg(0,ios::beg);
found=0;
while(file.read((char *) &rec, sizeof(rec)))
{
if(strcmp(nm,rec.getphno())==0)
{
found=1;
rec.display();
}
}
file.clear();
if(found==0)
cout<<"\n\n -----Record Not Found----- \n";
getchar();
break;
case 5:
cout<<"\n\n Enter Name : ";
cin>>nm;
file.seekg(0,ios::beg);
found=0;
cnt=0;
while(file.read((char *) &rec, sizeof(rec)))
{
cnt++;
if(strcmp(nm,rec.getname())==0)
{
found=1;
break;
}
}
file.clear();
if(found==0)
cout<<"\n\n ------Record Not Found----- \n";
else
{
int location = (cnt-1) * sizeof(rec);
cin.get(ch);
if(file.eof())
file.clear();
cout<<"Enter New Telephone No. : ";
cin>>telno;
file.seekp(location);
rec.update(nm,telno);
file.write((char *) &rec, sizeof(rec));
file.flush();
}
break;
case 6:
exit (0);
default:
cerr<<"********** Please Enter Valid Choice **********";
}
}
return 0;

}

OUTPUT :-

addition of complex no in cpp

addition and multiplication on complex no

code :
#include
using namespace std;
class complex
{
private:
float a,b;
public:
complex()
{
a = 0.0;
b = 0.0;
}
void getdata()
{
cout<<"Enter real part of complex number :";
cin>>a;
cout<<"Enter imaginary part of complex number :";
cin>>b;
}
void putdata()
{
if (b>0)
{
cout<}
else
{
cout<}
}
complex operator +(complex c)
{
complex x;
x.a = a + c.a;
x.b = b + c.b;
return x;
}
complex operator *(complex c)
{
complex x;
x.a = (a*c.a) - (b*c.b);
x.b = (a*c.b) + (c.a*b);
return x;
}
};
int main()
{
complex c1,c2,c3,c4;
cout<<"For first complex number : ";
c1.getdata();
cout<<"For second complex number : ";
c2.getdata();
c3 = c1 + c2;
c4 = c1 * c2;
cout<<" First complex number = ";
c1.putdata();
cout<<" Second complex number = ";
c2.putdata();
cout<<"_________________________________________________"<cout<<" Addition of the complex number = ";
c3.putdata();
cout<<"_________________________________________________"<cout<<"Multiplication of the complex number = ";
c4.putdata();
return 0;
}

OOP Binary addition -STL

C++ || Binary Addition || oop assignment

code :

#include

using namespace std;

stack read()

{

stack s;

int x,n,i;

cout<<"\nEnter the no. of bits in the no. :";

cin>>n;

cout<<"\nEnter the binary number : ";

for(i=0;i

{

cin>>x;

s.push(x);

}

return s;

}

void display(stack &s)

{

cout<<" ";

while(!s.empty())

{

cout<

s.pop();

}

stack add(stack &s1,stack &s2)

{

stack s;

int sum,carry=0,b1,b2;

while(!s1.empty()||!s2.empty())

{

b1=b2=0;

if(!s1.empty())

{

b1=s1.top();

s1.pop();

}

if(!s2.empty())

{

b2=s2.top();

s2.pop();

}

sum=(b1+b2+carry)%2;

carry=(b1+b2+carry)/2;

s.push(sum);

}

if(carry==1)

s.push(1);

return s;

}

int main()

{

stack s1,s2,s3;

int ch;

cout<<"\n\t\t\t********** MENU **********\n";

cout<<"\n1........Read first number"

<<"\n2........Read second number"

<<"\n3........Display addition of two numbers"

<<"\n4........Exit";

{

cout<<"\n Enter your choice..: ";

cin>>ch;

switch(ch)

{

case 1:

s1=read();

break;

case 2:

s2=read();

break;

case 3:

cout<<"\n The result of addition is :";

s3=add(s1,s2);

display(s3);

break;

}

}while(ch!=4);

return 0;

}

calculetor program in C++

C++ Program of Calculetor

#include using namespace std; class Calculator { private: float a; public: void getdata() { cout<<"Enter any number"; cin>>a; } void operator +(Calculator p) { Calculator q; q.a=a+p.a;

cout<<"Addition ="<

} void operator -(Calculator p) { Calculator q; q.a=a-p.a;

cout<<"Subtraction ="<

} void operator *(Calculator p) { Calculator q; q.a=a*p.a;

cout<<"Multiplication ="<

} void operator /(Calculator p) { Calculator q; q.a=a/p.a;

cout<<"Division ="<

} }; int main() { Calculator c1,c2; while(1) { c1.getdata(); c2.getdata(); int ch;

cout<<"1.Addition"<

cout<<"Enter your choice :"; cin>>ch; switch(ch) { case 1: c1+c2; break; case 2: c1-c2; break; case 3: c1*c2; break; case 4: c1/c2; break; case 5: return 0; default :

cout<<"Incorrect choice "<

} } } output: