C9 : Polinomial equation

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//To find polinomial equation 3X2 + 2X + 3

#include<stdio.h>
#include<conio.h>
void main()
      {
      clrscr();
      float a,b;
      printf("Enter the value of X\n");
      scanf("%f",&a);
      b=3*a*a+2*a+3;
      printf("Result=%f",b);
getch();
}
-----------------------------------------------------------------
Output
Enter the value of X
2
Result=19
===============================================

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C8 : Area of a triangle

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//To find Area of a triangle 

#include<stdio.h>
#include<conio.h>
void main()
   {
   clrscr();
   float a=3.14,b,c;
   printf("Enter Radius\n");
   scanf("%f",&b);
   c=a*b*b;
  printf("Area=%f",c);
getch();
}
-----------------------------------------------------------
Output
Enter radius
3
Area=28.26
===============================================

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C7 : Even-Odd numbers Print/check/sum

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A ))) //Program to print even numbers upto a given limit


Method -1
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int i=2,n,e;
printf("Enter the limit\n");
scanf("%d",&n);
printf("Even nos upto %d\n",n);
for(i=2;i<=n;i=i+2)
         {
printf("%d\n",i);
         }
getch();
}

------------------------------------

Output

Enter the limit (Enter your choice)

8

Even numbers upto 8 

2

4

6

8

Method -2

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

int i,n,

printf("Enter the limit\n");

scanf("%d",&n);

for(i=2;i<=n;i++)

     {

      if(i%2==0)

            {

             printf("%d\n",i)

            }

     }

getch();

}

------------------------------------

Output

Enter the limit (Enter your choice)

8

2

4

6

8

===============================================


B ))) //Check whether the given number is odd or even


#include<stdio.h>
#include<conio.h>
void main()
{
   clrscr();
   int i=1;
   printf("Enter the no\n");
   scanf("%d",&i);
   if(i%2==0)
      {
      printf("%d is even\n");
      }
   else
      {
      printf("%d is odd\n");
      }
   getch();
   }

------------------------------------------------------------------

Output

Enter the number

5

5 is odd

===============================================

C ))) ////Print the total number of odd or even within a given range(1 to 10)


#include<stdio.h>
#include<conio.h>
void main()
{
   clrscr();
   int i=1,o,e;
   printf("Enter the number\n");
   scanf("%d",&i);
   for(i=1;i<=10;i=i+1)
     {
      if(i%2==0)
         {
e=e+1;
         }
     else
         {
o=o+1;
         }
     }
   printf("Total no of even is %d,and odd is %d",e,o);
   getch();
}

------------------------------------------------------------------

Output

Enter the number

9

Total number of even is 4,and odd is 5

===============================================

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C6 : Displaying numbers(While,for.Do-While & Arrays)

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A )))) //Display 4 numbers(While Loop)
#include<stdio.h>
#include<conio.h>
void main()
          {
          clrscr();
          int i=1;
          while(i<=4)
                  {
                  printf("%d\n",i);
                  i=i+1;
                 }
        getch();
         }
---------------------------------------------
Output
1
2
3
4
===============================================
B )))) //Display 4 numbers(for loop)
#include<stdio.h>
#include<conio.h>
void main()
          {
          clrscr();
          int i=1;
          for(i=1;i<=4;i=i+1)
              {
               printf("%d\n",i);
               }
   getch();
}
---------------------------------------
Output
1
2
3
4


==============================================

C ))) //To display any 10 numbers using arrays(Our choice)

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

int i,a[10];

printf("Enter 10 nos\n");

for(i=0;i<10;i++)

         {

scanf("%d",&a[i]);

         }

         printf("The 10 nos are:\n");

        for(i=0;i<10;i++)

               {

       printf("%d\n",a[i]);

               }

getch();

}

------------------------------------------------------------

Output

Enter 10 numbers (Enter 10 numbers as per your choice)

1

2

3

4

5

6

8

4

5

6

The 10 numbers are :

1

2

3

4

5

6

8

4

5

6

===============================================

D ))) //To display 10 numbers using arrays 

#include<stdio.h>

#include<conio.h>

void main()

        {

clrscr();

int i,a[10];

printf("Displaying 10 nos using arrays:\n");

for(i=0;i<=10;i++)

{

printf("%d\n",a[i]);

}

getch();

}

(May be some error in output)

===============================================

E ))) //Display n nos using Arrays(any numbers upto the given limit)
(Note the difference in the output of E and F)

#include<stdio.h>

#include<conio.h>

void main()

           {

clrscr();

int i,n,a[100];

printf("How many nos you want to display\n");

scanf("%d",&n);

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

{

printf("%d",a[i]);

}

getch();

}

------------------------------------------------------------

Output

How many nos you want to display

3

1

2

3

===============================================

F ))) //Display n nos using Arrays(any numbers upto the given limit)

(Note the difference in the output of E and F)

#include<stdio.h>

#include<conio.h>

void main()

           {

clrscr();

print i,n,a[100];

printf("How many nos you want to display\n");

scanf("%d",&n);

printf("Enter %d no\n",n);

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

{

scanf("%d",&a[i]);

}

printf("The nos are:\n");

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

{

printf("%d\n",a[i]);

}

getch();

}

------------------------------------------------------------

Output

How many nos you want to display

2
Enter 2 numbers
3
4
The nos are:
3
4
===============================================
G ))) //Display n numbers(Do-While)



#include<stdio.h>
#include<conio.h>
void main()
{
   clrscr();
   int i=1,n;
   printf("How many nos you want to display\n");
   scanf("%d",&n);
   do
   {
      printf("%d\n",i);
      i=i+1;
   }
   while(i<=n);
getch();
}
---------------------------------------------------------

Output

How many nos you want to display

3

1

2

3

===============================================

H ))) //Display n numbers(For loop) (As per our choice)

Refer Eg:J

#include<stdio.h>

#include<conio.h>

void main()

{

   clrscr();

   int i=1,n;

   printf("How many nos you want to display\n");

   scanf("%d",&n);

   for(i=1;i<=n;i=i+1)

   {

      printf("%d\n",i);

   }

   getch();

}

---------------------------------------------------------

Output

How many nos you want to display

3

1

2

3

===============================================

I ))) //Display n numbers(While loop)

#include<stdio.h>
#include<conio.h>
void main()
{
   clrscr();
   int i=1,n;
   printf("How many nos you want to display\n");
   scanf("%d",&n);
   while(i<=n)
   {
      printf("%d\n",i);
      i=i+1;
   }
   getch();
}

---------------------------------------------------------

Output

How many nos you want to display

3

1

2

3

==============================================

J ))) //Display n numbers(For loop) - Not as per our choice
Refer Eg:H



#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int i=1,n;
for(i=1;i<=10;i=i+1)
{
printf("%d\n",i);
}
getch();
}

---------------------------------------------------------

Output

1

2

3

4

5

6

7

8

9

10

==============================

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