C Program for Number Comparison

1.write a program to perform following operation through enter user choice- 

1. for finding greatest no in given 2  number

2. for finding greatest no in given  3 number

3. for finding greatest no in given  4 number

   in this program we use( do while loop , switch case and if else condition 

   
   
   #include<stdio.h>
   
   #include<conio.h>
   void main()
   {
      int a,b,c,d,ch;
      clrscr();
      do
         {
            printf("\n1 for finding greatest no in  2 no");
            printf("\n2 for finding greatest no in 3 no");
            printf("\n3 for finding greatest no in 4 no");
            printf("\n0 for exit");
            scanf("%d",&ch);
            if(ch  >=  1  &&   ch  <=  3)
              {
                 printf("enter first no");
                 scanf("  %d  "   ,&a);
                printf("enter second no");
                scanf(" %d "    , &b);
                if(ch    >=   2)
                     {
                           printf("enter third no");
                           scanf("  %d  "  ,&c);
                           if(ch  ==  3)
                             {
                                  printf("enter fourth no");
                                  scanf("  %d  " ,&d);
                            }
                   }
            }
   switch(ch)
       {
         case 1:
                    if( a  ==   b )                                 
                        {
                            printf("these are equal value");
                        }
4.                   else if( a > b )
                       {
                         printf("%d  is greater than  %d ", a, b);
                        }
                   else
                       {
                        printf("%d  is greater than  %d", b, a);
                        }
                  break;
   case 2:
                  if(a > b  &&  a > c)
                          printf("%d  is greater than  %d  and %d" , a, b , c);
                  else if( b> c)
                         printf("%d  is greater than %d and %d", b, c, a);
                  else
                         printf("%d  is greater than %d and %d", c, a, b);
                 break;
   case 3:
                if(a > b  &&  a > c  &&  a > d)
                        printf("%d  is greater than %d , %d and %d", a, b, c, d);
               else if(b > c  &&  b > d)
                       printf("%d  is greater than %d, %d and %d", b, c, d, a);
               else if( c > d  )
                        printf("%d  is greater than %d, %d and %d", c, d, a, b);
               else
                        printf("%d is greater than %d, %d and %d", d, a, b, c);
               break;
   case 0:
              printf("oops! you press wrong key"); 
              break;
   default:
              printf("wrong choice");
     }
   }
   while(  ch  !=  0 );
   getch();
   }
   
    
     

C Programs to Print Patterns

1. Write a Program to Print the following pattern:
                    *
                    * *
                    * * *
                    * * * *
                    * * * * *


#include<stdio.h>
main() 
{
        int  i, j;
        for(i = 5 ; i >= 1 ; i--)
        {
                 for(j = i ; j <= 5 ; j++) 
                {
                        printf("*"); 
                } 
                printf("\n");
        }
}


2. Write a Program to Print the following pattern:
                     * * * * *  
                     * * * * 
                     * * * 
                     * * 
                     *

#include<stdio.h>

main() 

{

        int  i, j;

        for(i = 5 ; i >= 1 ; i--)

        {

                 for(j = i ; j >= 1 ; j--) 

                {

                        printf("*"); 

                } 

                printf("\n");

        }

}

3. Write a Program to Print the following pattern:

                     1

                     2 2

                     3 3 3

                     4 4 4 4

                     5 5 5 5 5 

#include<stdio.h>  

main()

 {

         int i,j;

         for(i = 1 ; i < = 5 ; i++)

         {

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

                 {

                         printf("%d",i);

                 }

                 printf("\n");

         }

}

4. Write a Program to Print the following pattern:     

                     5 4 3 2 1

                     4 3 2 1

                     3 2 1 

                     2 1

                     1

#include<stdio.h>

main()

{

         int i,j;

         for(i = 5 ; i >= 1 ; i--)

         {

                 for(j = i ; j >= 1 ; j--)

                 {

                         printf("%d",i);

                 }

                 printf("\n");

         }

}

5. Write a Program to Print the following pattern:

                    1

                    1 2

                    1 2 3

                    1 2 3 4

                    1 2 3 4 5

                
#include<stdio.h>
main()
{
        int i,j;
        for(i = 1 ; i < = 5 ; i++)
        {
                for(j = 1 ; j <= i ; j++)
                {
                        printf("%d",j);
                }
                printf("\n");
        }

}



6. Write a Program to Print the following pattern:

                     *

                   *  *

                 *  *  *

               *  *  *  *

             *  *  *  *  *

#include<stdio.h>

#include<conio.h>

main()

{

      int i,j,k,c=40;

      clrscr();

      for(i = 1 ; i <= 5 ; i++)

      {

           for(j = 1 ; j <= c ; j++)

           {

                printf(" ");

           }

           for(k = 1;k <= i; k++)

           {

                printf(" *");

           }

           printf("\n");

           c--;

      }

      getch();

}    

 7. Write a Program to Print the following pattern:
  *  *  *  *  *  *  *  *  *  
  *  *  *  *      *  *  *  *
  *  *  *             *  *  *
  *  *                     *  *
  *                             *
  *  *                     *  *
  *  *  *             *  *  *
  *  *  *  *      *  *  *  *
  *  *  *  *  *  *  *  *  *

#include<stdio.h>
#include<conio.h>
 main()
   {
    int  i , j , k , l , m , c ;
    clrscr();
    do
    {
    printf(" enter greatest no of *" );
    scanf("%d",&m);
    c=m;
    for(i = 1 ; i <= m ; i++)
       {
           for(j = 1 ; j <= c ; j++)
              {
                 if(j == m)
                   {
                     continue;
                   }
                 printf("*");
             }
         for(k = 1 ; k < i ; k++)
             {
                if(k == 1)
                           printf(" ");
                else
                           printf("  ");
            }
        for(l = c ; l >= 1 ; l--)
           {
                   printf("*");
            }
         c--;
         printf("\n");
      }
      c=c+2;
      for(i = m-1 ; i >= 1 ; i--)
         {
             for ( j = 1 ; j <= c ; j++)
                 {
                     if(j == m)
                        {
                            continue;
                         }
                    printf("*");
                 }
           for(k = 1 ; k<i ; k++)
               {
                   if( k == 1)
                   {
                    printf(" ");
                   }
                   else
                   {
                     printf("  ");
                    }  
               }
         for( l = c ; l >= 1 ; l--)
            {
               printf("*");
            }
         c++;
         printf("\n");
       }
   } while(m!=0);

getch();
}