C++ is one of the most popular programming languages. It is based on C but is an object-oriented programming language. It is widely used in graphics libraries, games, network devices, etc.

//Program to find Factorial of a number by while looping

#include<iostream.h>

#include<conio.h>

#include<math.h>

 void main()

{clrscr();

 int num,fact=1;

 cout<<"\n Enter the number:";

 cin>>num;

 for(int i=1;i<=num;i++)

 {

  fact=fact*i;

 }

 cout<<"\n Factorial of "<<num<<"="<<fact;

 getch();

}

Learn C++ (Introduction and Tutorials to C++ Programming)

C++ is one of the most popular programming languages. It is based on C but is an object-oriented programming language. It is widely used in graphics libraries, games, network devices, etc.

//Program to find the positive number

#include<iostream.h>

#include<conio.h>

void main()

{clrscr();

int num,i,sum;

cout<<"\n enter the positive number:";

cin>> num;

i=1;

sum=0;

start:

sum=sum+i;

i++;

if(i<=num)

goto start;

cout<<sum;

getch();

}

Learn C++ (Introduction and Tutorials to C++ Programming)

C++ is a general-purpose programming language. It has imperative, object-oriented and generic programming features, while also providing facilities for low-level memory manipulation.

//Program to generate the Fibonacci series

#include<iostream.h>

#include<conio.h>

 void main()

 {clrscr();

 int x=0,y=1,z,n,i=3;

 cout<<"\n Enter The Number Of Term :";

 cin>>n;

 cout<<x<<" "<<y<<" ";

 do

 {z=x+y;

 cout<<z<<" ";

 x=y;

 i++;

 }while(i<=n);

 getch();

 }

Learn C++ (Introduction and Tutorials to C++ Programming)

//Program to find product of two matrices

#include<iostream.h>

#include<conio.h>

void main()

{

 clrscr();

 int A[10][10],B[10][10],C[10][10],m,n,p,q,i,k,j;

 cout<<"\n enter the size of first matrix :";

 cin>>m>>n;

 cout<<"\n enter the size of second matrix :";

 cin>>p>>q;

 if(n==p)

 {

  cout<<"\n product of two matrix is possible ";

  cout<<"\n enter the elements of first matrix ";

  {

   for(i=0;i<m;i++)

   for(j=0;j<n;j++)

   {

    cout<<"\n enter A["<<i<<"]["<<j<<"]";

    cin>>A[i][j];

   }

  }

  cout<<"\n enter the elements of second matrix";

  for(i=0;i<p;i++)

  {

   for(j=0;j<q;j++)

   {

    cout<<"\n enter B["<<i<<"]["<<j<<"]";

    cin>>B[i][j];

   }

  }

  cout<<"\n the first matrix is :";

  for(i=0;i<m;i++)

  {

   cout<<"\n";

   for(j=0;j<n;j++)

   cout<<A[i][j]<<" ";

  }

  cout<<"\n second matrix is:";

  for(i=0;i<p;i++)

  {

   cout<<"\n ";

   for(j=0;j<q;j++)

   cout<<B[i][j]<<" ";

  }

  for(i=0;i<m;i++)

  {

   for(j=0;j<q;j++)

    {

        C[i][j]=0;

     }

for(i=0;i<m;i++)

  for(j=0;j<q;j++)

      for(k=0;k<n;k++)

   {

    C[i][j]+=A[i][k]*B[k][j];

   } 

  }

  cout<<"\n the product of two matrix is :";

  for(i=0;i<m;i++)

  {

   cout<<"\n";

   for(j=0;j<q;j++)

   cout<<C[i][j]<<" ";

  }

 }

 else

 cout<<"\n multiplication is not possible:";

 getch();

}

//Program to find diagonal of matrix

#include<iostream.h>

#include<conio.h>

void main()

{clrscr();

int A[10][10],B[10][10],m,n,i,j;

cout<<"\n enter the no. of rows:";

cin>>m;

cout<<"\n enter no. of column:";

cin>>n;

for(i=0;i<m;i++)

{ for(j=0;j<n;j++)

 { cout<<"/n enter A["<<i<<"]["<<j<<"] element:";

 cin>>A[i][j];

 }

  }

   cout<<"/n the matrix is:";

   for(i=0;i<m;i++)

   { cout<<"\n";

  for(j=0;j<n;j++)

    cout<<A[i][j]<<" ";

    }

  cout<<"/n first diagonal is:\n";

  for(i=0;i<n;i++)

  { for(j=0;j<m;j++)

  { if(i==j)

 cout<<A[i][j]<<" ";

 }

  }

   cout<<"\n second diagonal is:";

   for(i=0;i<n;i++)

   { for(j=0;j<m;j++)

  { if(i+j==n-1)

  cout<<A[i][j]<<" ";

  }

   }

    int sum1=0,sum2=0;

    for(i=0;i<n;i++)

    { for(j=0;j<m;j++)

    { if(i==j)

      sum1+=A[i][j];

      if(i+j==n-i)

 sum2+=A[i][j];

 }

  }

  cout<<"\n sum of first diagonal element="<<sum1;

  cout<<"\n sum of second diagonal element="<<sum2;

   if(i==j)

   { cout<<A[i][j]<<" ";

   sum1+=A[i][j];

  }

  getch();

  }

C++ is one of the most popular programming languages. It is based on C but is an object-oriented programming language. It is widely used in graphics libraries, games, network devices, etc. C++ is a general-purpose programming language. It has imperative, object-oriented and generic programming features, while also providing facilities for low-level memory manipulation.

//Program to check whether the number is string or not

#include<iostream.h>

#include<conio.h>

#include<stdio.h>

void main()

{clrscr();

char string[10];

int i;

cout<<"\n enter the string:";

 gets(string);

 for(i=0;string[i]!='\0';i++)

 {if(string[i]>=65 && string[i]<=92)

    string[i]=string[i]+32;

  string[i]=string[i];

  }

  cout<<"\n the converted string is:"<<string;

    getch();

   }

//Program to display the sum of each row elements

#include<iostream.h>

#include<conio.h>

#include <math.h>

void main()

{ clrscr();

 int P[10][10],m,n,i,j,sum1=0;

 cout<<"\n enter the no of rows for P:";

 cin>>m;

 cout<<"\n enter the no of columns for P:";

 cin>>n;

 for(i=0;i<m;i++)

 {

  for(j=0;j<n;j++)

  {

   cout<<"\n enter P["<<i<<"]["<<j<<"] elements:";

   cin>>P[i][j];

  }

 }

cout<<"\n the matrix P is:";

for (i=0;i<m; i++)

{cout<<"\n";

for(j=0; j<n; j++)

cout<<P[i][j]<<" ";

}

for(i=0;i<m; i++)

{sum1=0;

for(j=0; j<n; j++)

sum1+=P[i][j];

cout<<"\n Sum of row"<<i+1<<"="<<sum1;

}

getch();

}

Learn C++ (Introduction and Tutorials to C++ Programming)

//Program to check whether given string is palindrome or not

#include<iostream.h>

#include<conio.h>

#include<stdio.h>

  void main()

  {clrscr();

  char str[30];

  int i,j,len,flag;

  cout<<"\n Enter The String :";

  gets (str);

  for(len=0; str [len]!='\0';++len);

  cout<<"\n The Length of The String ="<<len;

  for(i=0, j=len-1; i<len/2;i++,j--)

  {if(str[i]!= str[j])

  {flag =1;

  cout <<"\n NOT A PALINDROME";

  break;

  }

 }

 if(flag==0)

 cout<<"\n YES A PALINDROME";

 getch();

}

C++ is a general-purpose programming language. It has imperative, object-oriented and generic programming features, while also providing facilities for low-level memory manipulation. C++ is one of the most popular programming languages. It is based on C but is an object-oriented programming language. It is widely used in graphics libraries, games, network devices, etc.

//Program to find the length of a string without using library function

#include<iostream.h>

#include<conio.h>

#include<stdio.h>

 void main()

 {clrscr();

 char str[30];

 int len;

 cout<<"\n Enter a String :";

 gets(str);

 for(len=0;str(len)!='\0';++len);

 cout<<"\n The Length of The String="<<len;

 getch();

 }

//Program to find the transpose of m*n Matrix

#include<iostream.h>

#include<conio.h>

 void main()

 {clrscr();

 int A[10][10],B[10][10],m,n,i,j;

 cout<<"\n  Enter The No. of rows :";

 cin>>m;

 cout<<"\n Enter The No. of columns :";

 cin>>n;

 for(i=0; i<m;i++)

 {for(j=0; j<n;j++)

 {cout<<"\n Enter A["<<i<<"]["<<j<<"] element :";

 cin>>A[i][j];

  }

 }

 cout<<"\n The Matrix is :";

 for(i=0;i<m;i++)

 {cout<<"\n";

 for(j=0;j<n;j++)

 cout<<A[i][j]<<" ";

}

 for(i=0;i<n;i++)

{for(j=0;j<m;j++)

 B[i][j]=A[j][i];

 }

 cout<<"\n The Transpose Matrix Is :";

 for(i=0;i<n;i++)

 {cout<<"\n";

 for(j=0;j<m;j++)

 cout<<B[i][j] <<"";

 }

 getch();

 }

//Program to find the sum of two matrices

#include<iostream.h>

#include<conio.h>

void main()

{

 clrscr();

 int A[10][10],B[10][10],C[10][10],m,n,p,q,i,j;

 cout<<"\n enter the no of rows for A:";

 cin>>m;

 cout<<"\n enter the no of columns for A:";

 cin>>n;

 cout<<"\n enter the no of rows for B:";

 cin>>p;

 cout<<"\n enter the no of columns for B:";

 cin>>q;

 if(m==p && n==q)

 {

  for(i=0;i<m;i++)

  {

   for(j=0;j<n;j++)

   {cout<<"\n enter A["<<i<<"]["<<j<<"] elements:";

    cin>>A[i][j];

   }

  }

 cout<<"\n the matrix A is:";

 for(i=0;i<m;i++)

 {

  cout<<"\n";

  for(j=0;j<n;j++)

  cout<<A[i][j]<<" ";

 }

 for(i=0;i<p;i++)

 {

  for(j=0;j<q;j++)

  {

  cout<<"\n enter B["<<i<<"]["<<j<<"] elements:";

  cin>>B[i][j];

  }

 }

 cout<<"\n the matrix B is:";

 for(i=0;i<p;i++)

 {

  cout<<"\n";

  for(j=0;j<q;j++)

  cout<<B[i][j]<<" ";

 }

 for(i=0;i<m;i++)

 {

  for(j=0;j<n;j++)

  C[i][j]=A[i][j]+B[i][j];

 }

  cout<<"\n the sum of the two is:";

  for(i=0;i<m;i++)

  {

   cout<<"\n";

   for(j=0;j<n;j++)

   cout<<C[i][j]<<" ";

  }

 }

  else

  {

   cout<<"\n the two are not equal and hence not be added:";

   }

 getch();

}

//Program to sort an Integer Array in descending order

#include <iostream.h>

#include <conio.h>

void main()

{clrscr();

int n,i,j,B[10],temp ;

cout <<"\n enter the number of element :";

cin>>n;

for (i=0; i<n ; i++)

{cout <<"\n enter B["<<i<<"] element :";

cin>>B[i];

}

cout <<"\n original array :";

for (j=0; j<n; j++)

cout <<"\n B["<<j<<"]="<<B[j];

for(i=0;i<n; i++)

{for(j=0;j<n-i-1; j++)

{if(B[j] <B[j+1])

{temp=B[i];

B[j]=B[j+1];

B[j+1]=temp;

  }

 }

}

cout<<"\n decending order of array is :";

for(j=0;j<n;j++)

cout<< B[j]<<">";

getch();

}

//Program to find the Sum of Series

#include<iostream.h>

#include<stdio.h>

#include<conio.h>

void main()

{clrscr();

float x,sum,term,fact=1;

int i,n;

cout<<"\n enter the value of x and n:";

cin>>x>>n;

sum=1;term=1;

for(i=1;i<=n;i++)

{fact=fact*i;

term=term+(x/fact);

sum=sum+term;

}cout<<"\n sum of the series="<<sum;

getch();

}

Or

#include <iostream.h>

#include <conio.h>

#include <math.h>

void main()

{clrscr();

  long x,n,i,sum=0,term;

  cout<<"\n enter the x:";

  cin>>x;

  cout<<"\n enter the n:";

  cin>>n;

for(i=1;i<=n;i++)

 {

  term=pow(x,i);

  sum=sum+term;

 }

  cout<<"\n enter the sum="<<sum;

 getch();


 }

//Program to Calculate Area of Circle, a Rectangle or a Square

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{clrscr();

int r,L,B,s;

int ch;

 float area;

       cout<<"\n press 1 for circle";

       cout<<"\n press 2 for rectangle";

       cout<<"\n press 3 for square";

       cout<<"\n enter your choice :";

       cin>>ch;

 switch(ch)

{case 1:cout<<"\n enter the radius:";

 area=3.14*r*r;

 cout<<"\n"<<"the area of the circle is"<<area<<"\n";

 break;

 case 2:cout<<"\n enter length and breadth of rectangle:";

 cin>>L>>B;

 area=L*B;

 cout<<"\n"<<"the area of rectangle is"<<area<<"\n";

 break;

 case 3:cout<<"\n enter the sides of square:";

 cin>>s;

 area=(s*s);

 cout<<"\n"<<"the area of the square is"<<area<<"\n";

 break;

 default:cout<<"\n wrong choice entered";

}

getch();

}

//Program to Check the number is whether palindrome or not

#include<iostream.h>

#include<conio.h>

#include<math.h>

 void main()

{clrscr();

 long num,res=0,ori,c;

 cout<<"\n Enter the number:";

 cin>>num;

 ori=num;

 while(num>0)

 {

  c=num %10;

  res=res*10+c;

  num=num/10;

 }

 if(ori==res)

   cout<<"\n The entered number is palindrome";

 else

     cout<<"\n The entered number is not palindrome";

 getch();

}

//Program to check whether the entered number is even or odd using if else

#include<iostream.h>

#include<conio.h>

 void main()

 {clrscr();

 int n;

 cout<<"\n Enter an Integer:";

 cin>>n;

 if(n%2==0)

 {

 cout<<n<<" Is Even ";

 }

 else

 {

 cout<<n<<" Is Odd";

 }

 getch();

 }

C++ is a general-purpose programming language. It has imperative, object-oriented and generic programming features, while also providing facilities for low-level memory manipulation.

//Program to input Square and Cube of an Integer

#include<iostream.h>

#include<conio.h>

void main()

{clrscr();

 int i,s,c;

 cout<<"\n Enter The Integer:";

 cin>>i;

 s=i*i;

 c=i*i*i;

 cout<<"\n Square="<<s;

 cout<<"\n Cube="<<c;

 getch();

}

C++ is one of the most popular programming languages. It is based on C but is an object-oriented programming language. It is widely used in graphics libraries, games, network devices, etc.

//Program to find Largest number of three Integer

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{clrscr();

int a,b,c,largest;

cout<<"\n enter the integer:";

cin>>a>>b>>c;

largest=(a>b)?(a>c?a:c):(b>c?b:c);

cout<<"\n largest integer is:"<<largest;

getch();

}

//Program to find the detail of  n customer

#include<iostream.h>

#include<conio.h>

#include<stdio.h>

struct address

{int HNO;

char street[10];

char city[20];

char pin[7];

};

struct date

{int dd;

int mm;

int yy;

};

struct directory

{int ID;

char name[20];

date DOB;

address ADDRESS;

};

void main()

{clrscr();

directory DIRC[10];

int n,id,flag=0;

cout<<"\n Enter the no of customer : ";

cin>>n;

for(int i=0;i<n;i++)

{cout<<"\n Enter customer Id : ";

cin>>(DIRC[i].ID);

cout<<"\n Enter customer name : ";

gets(DIRC[i].name);

cout<<"\n Enter Address  ";

cout<<"\n Enter House No : ";

cin>>DIRC[i].ADDRESS.HNO;

cout<<"\n Enter Street : ";

cin>>DIRC[i].ADDRESS.street;

cout<<"\n Enter City : ";

cin>>DIRC[i].ADDRESS.city;

cout<<"\n Enter Pin : ";

cin>>DIRC[i].ADDRESS.pin;

cout<<"\n Enter date of birth : ";

cin>>(DIRC[i].DOB.dd);

cin>>(DIRC[i].DOB.mm);

cin>>(DIRC[i].DOB.yy);

}

cout<<"\n Enter ID to be Searched : ";

cin>>id;

 for(i=0;i<n;i++)

{if(DIRC[i].ID==id)

{cout<<"\n customer id="<<DIRC[i].ID;

 cout<<"\n customer name="<<DIRC[i].name;

 cout<<"\n customer address=";

 cout<<DIRC[i].ADDRESS.HNO<<","<<DIRC[i].ADDRESS.street<<","

    <<DIRC[i].ADDRESS.city<<","<<(DIRC[i].ADDRESS.pin);

 cout<<"\n customer DOB:";

 cout<<(DIRC[i].DOB.dd)<<"/"<<(DIRC[i].DOB.mm)<<"/"<<(DIRC[i].DOB.yy);

 flag=1;

}

}

if (flag==0)

cout<<"\n not found:";

getch();

}

//Program to calculate the number of vowels

#include<iostream.h>

#include<conio.h>

#include<stdio.h>

#include <ctype.h>

void CHARTYPE(char STRING[20]);

void main ()

{clrscr();

char string[20],ch;

cout<<"\n Enter a string:";

gets(string);

CHARTYPE(string);

getch();

}

void CHARTYPE(char string[20])

{char ch;

 int len,v=0,c=0,o=0,d=0;

 for(len=0;string[len]!='\0';++len)

 {if(isalpha (string[len]))

  {ch=toupper(string[len]);

   if(ch=='A'||ch=='E'||ch=='I'||ch=='0'||ch=='U')

   ++v;

   else

   ++c ;

  }

else if (isdigit (string[len]))

++d;

else

++o;

}

cout<<"\n There are "<<v<<"vowels,"<<c<<"constants,"<<d<<"digit and"<<o<<"other character in the given string :";

}

//program to search a number in any integer array using user defined function

#include<iostream.h>

#include<conio.h>

 void SEARCH (int a[10],int n,int elements);

 void main()

{clrscr();

 int a[10],n, elements,i;

 cout<<"\n Enter No. Of elements :";

 cin>>n;

 for (i=0;i<n;i++)

 {cout<<"\n Enter a["<<i<<"] elements :";

 cin>>a[i];

 }

 cout<<"\n The Array is :\n ";

 for (i=0;i<n;i++)

 cout<<a[i]<<" ";

 cout<<"\n Enter The element to be search :";

 cin>>elements;

 SEARCH (a,n, elements);

 getch();

}

void SEARCH (int a[10], int n ,int elements)

{int i, flag= 0;

 for(i=0; i<n; i++)

 {if ( a[i]== elements)

    {flag=1;

     break;

    }

 }

if(flag==0)

  cout<<"\n Unsuccessful Search ";

  else

  cout<<"\n element is found at index "<<i<<" and at position "<<(i+1);

}

//program to find the number prime or not

#include <iostream.h>

#include <conio.h>

int PRIME(int N);

void main()

{clrscr();

 int i,n;

 cout<<"\n Enter Any no :";

 cin>>n;

 int x=PRIME(n);

 if(x==0)

 cout<<"\n Not a Prime :";

 else

 cout<<"\n Yes It is Prime :";

getch();

}

int PRIME(int N)

{int I,FLAG=0;

 for(I=2;I<N;I++)

 {FLAG=N%I;

 if( FLAG==0)

 return 0;

 }

 return 1;

}