PROGRAM TO CONVERT CHARACTERS FROM LOWERCASE TO UPPERCASE AND FROM UPPERCASE TO LOWERCASE IN GIVEN STRING IN C++

Write a program to convert all characters from lowercase to uppercase and all upper case characters to lowercase in given string


#include<iostream.h>
#include<conio.h>
void main()
{
 clrscr();
 int m,t=0,i;
 char a[100];
 cout<<"Enter the string\n";
 cin.getline(a,100);
 for(i=0;a[i]!='\0';i++)  //to count total number of words include space
 {
  t++;
 }
 cout<<"\nString after conversion\n";
 for(i=0;i<t;i++)
 {
  m=0;
  m=a[i];
  if(m>=65&&m<=90)
  {
   m=m+32;
   cout<<char(m);
  }
  else
   if(m>=97&&m<=122)
   {
    m=m-32;
    cout<<char(m);
   }
   else
    {
     cout<<char(m);
    }
  }
 getch();
}

==OUTPUT==

PROGRAM TO PRINT UPPER TRIANGULAR MATRIX IN C++

Write a program to print upper triangular matrix in c++

#include<iostream.h>
#include<conio.h>
void main()
{   clrscr();
 int a[10][10],b[10][10],c[10][10];
 int i, j, n, m;
 int p,q;
 cout<<"enter no of rows of matrix\n";
 cin>>m;
 cout<<"enter no of colomns of matrix\n";
 cin>>n;
 cout<<"\n\nenter the elements of matrix\n";
  for(i=0;i<m;i++)
   {
    for(j=0;j<n;j++)
     {
      cout<<"a["<<i+1<<"]["<<j+1<<"]:= ";
      cin>>a[i][j];
     }
   }
  cout<<"\n\nmatrix u have entered is"<<endl;
  for(i=0;i<m;i++)
   {
    for(j=0;j<n;j++)
     {
      cout<<"\t"<<a[i][j];
     }
    cout<<endl;
   }
 cout<<"Upper tringular matrix is"<<endl;
  for(i=0;i<m;i++)
  {
   for(j=0;j<n;j++)
    {
     if(i<=j)
     {
      cout<<"\t"<<a[i][j];
     }
     else
     {
      cout<<"\t ";
     }
    }
    cout<<endl;
  }


getch();
}

==OUTPUT==

PROGRAM TO COUNT TOTAL NUMBER OF POSITIVE AND NEGATIVE ELEMENTS IN A MATRIX AND PRINT THEM IN C++

#include<iostream.h>
#include<conio.h>
void main()
{   clrscr();
 int a[10][10];
 int i, j, n, m;
 int x[100],y[100],pos=0,neg=0;
 cout<<"enter no of rows\n";
 cin>>n;
 cout<<"enter no of colomn\n";
 cin>>m;
 cout<<"enter the values of matrix\n";
 for(i=0;i<n;i++)
  {
   for(j=0;j<m;j++)
    {
     cout<<"a["<<i+1<<"]["<<j+1<<"]:= ";
     cin>>a[i][j];
    }

  }
 cout<<"matrix u have entered is"<<endl;
 for(i=0;i<n;i++)
  {
   for(j=0;j<m;j++)
    {
     cout<<"\t"<<a[i][j];
    }
    cout<<endl;
  }
  for(i=0;i<n;i++)
  {
   for(j=0;j<m;j++)
    {
     if(a[i][j]>=0)
      {
       x[pos]=a[i][j];
       pos++;
      }
     else
       {
        y[neg]=a[i][j];
        neg++;
       }
    }
  }
  cout<<"total positive elements are= "<<pos<<endl;
  cout<<"positive elements are"<<endl;
  for(i=0;i<pos;i++)
   {
    cout<<x[i]<<endl;
   }
  cout<<"total neg elements are= "<<neg<<endl;
  cout<<"neg elements are"<<endl;
  for(i=0;i<neg;i++)
   {
    cout<<y[i]<<endl;
   }
getch();
}
==OUTPUT==

TO PRINT TRANSPOSE OF A MATRIX IN C++

Write a program to print transpose of a matrix in c++

#include<iostream.h>
#include<conio.h>
void main()
{
 clrscr();
 int a[10][10];
 int i, j, n, m;
 int x[100],y[100];
 cout<<"enter no of rows\n";
 cin>>n;
 cout<<"enter no of colomn\n";
 cin>>m;
 cout<<"enter the elements of matrix\n";
 for(i=0;i<n;i++)
  {
   for(j=0;j<m;j++)
    {
     cout<<"a["<<i+1<<"]["<<j+1<<"]:= ";
     cin>>a[i][j];
    }

  }
 cout<<"matrix u have entered is"<<endl;
 for(i=0;i<n;i++)
  {
   for(j=0;j<m;j++)
    {
     cout<<"\t"<<a[i][j];
    }
    cout<<endl;
  }
  cout<<"\n\ntranspose of matrix is:="<<endl;
  for(j=0;j<m;j++)
  {
   for(i=0;i<n;i++)
    {
     cout<<"\t"<<a[i][j];
    }
    cout<<endl;
  }
getch();
}

==OUTPUT==

COUNT TOTAL NUMBER OF EVEN AND ODD NUMBERS IN A MATRIX AND PRINT THEM IN C++

Write a program to count total number of even and odd elements in a matrix and print that elements

#include<iostream.h>
#include<conio.h>
void main()
{   clrscr();
 int a[10][10];
 int i, j, n, m;
 int x[100],y[100],even=0,odd=0;
 cout<<"enter no of rows\n";
 cin>>n;
 cout<<"enter no of colomn\n";
 cin>>m;
 cout<<"enter the elements of matrix\n";
 for(i=0;i<n;i++)
  {
   for(j=0;j<m;j++)
    {
     cout<<"a["<<i+1<<"]["<<j+1<<"]:= ";
     cin>>a[i][j];
    }
  }
 cout<<"matrix u have entered is"<<endl;
 for(i=0;i<n;i++)
  {
   for(j=0;j<m;j++)
    {
     cout<<"\t"<<a[i][j];
    }
    cout<<endl;
  }
  for(i=0;i<n;i++)
  {
   for(j=0;j<m;j++)
    {
     if(a[i][j]%2==0 && a[i][j]>=0)
      {
       x[even]=a[i][j];
       even++;
      }
     else
      if(a[i][j]%2!=0 && a[i][j]>=0)
       {
        y[odd]=a[i][j];
        odd++;
       }
    }
  }
  cout<<"total even elements are= "<<even<<endl;
  cout<<"even elements are"<<endl;
  for(i=0;i<even;i++)
   {
    cout<<x[i]<<endl;
   }
  cout<<"total odd elements are= "<<odd<<endl;
  cout<<"odd elements are"<<endl;
  for(i=0;i<odd;i++)
   {
    cout<<y[i]<<endl;
   }
getch();
}

==OUTPUT==

enter no of rows
2
enter no of column
2
enter the elements of matrix
a[1][1]:=1

a[1][2]:=2

a[2[1]:=3

a[2][2]:=4
matrix you have entered is
1  2
3  4
total even elements are=2
even elements are
2
4
total odd elements are=2
odd elements are
1
3

Print Prime Number Pyramid

Q) Write a program to print the PRIME NUMBER PYRAMID.


Sol)

#include<stdio.h>
#include<conio.h>

int prime(int num) ;
void main()
{
     clrscr();
     int i,j ;
     int number=2;
     printf("c-programcodes.blogspot.in")
     for(i=0;i<5;i++)
        {
              printf("\n");
              for(j=0;j<=i;j++)
                 {
                      while(!prime(number)) ;
                         {
                             number++;
                          }
                       printf("%d\t", number++)}
          }
      getch();
}

int prime(int num)
{
        int i, flag ;
        for(i=2;i<num;i++)
           {
                if(num%i!=0)
                      flag=1;
                else
                  {
                       flag=0;
                       break ;
                   }
              }
         if(flag==1 || num==2)
                return(1) ;
         else
                return(0);
 }

                             ===OUTPUT===
c-programcodes.blogspot.in
2

3     5

7     11    13

17   19    23    29

31    37    41    47

STAR PATTERN3

Q)Write a Program to Print The Following Star Pattern in c++
    *
   * *
  * * *
 * * * *
* * * * *

Sol) 
#include<iostream.h>
#include<conio.h>

 void main()
{
    clrscr();
    int i,j,n,k;
    cout<<"Enter number of rows"<<endl;
    cin>>n;
    
    for(i=1;i<=n;i++)
          {
              for(j=n-1;j>=i;j--)
                {
                    cout<<" ";
                 }
             for(k=1;k<=i;k++)
                {
                   cout<<"*";
                }
            cout<<endl;
        }
    getch();
}

                                                    ===OUTPUT===
Enter number of rows
5
    *
   * *
  * * *
 * * * *
* * * * *