C PROGRAM FOR FACTORIAL USING RECURSION

/* C PROGRAM FOR  FACTORIAL USING RECURSION */

#include<stdio.h>

#include<conio.h>

void main()

{

      int n,f;

      int fact(int);

      clrscr();

      printf("\n\t\t FACTORIAL USING RECURSION");

      printf("\n\t\t ~~~~~~~~~~~~~~~~~~~~~~~~~");

      printf("\n Enter the numbers:");

      scanf("%d",&n);

      f=fact(n);

      printf("\n The factorial :%d",f);

      getch();

 }

int fact(int n)

{

     if(n==1)

     return(1);

     else

     return(n*fact(n-1));

 }

OUTPUT:

              

                     FACTORIAL USING RECURSION

Enter the numbers: 5

 The factorial: 120

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C PROGRAM FOR FIBONNACCI USING RECURSION

/*C PROGRAM FOR FIBONNACCI USING RECURSION */

# include<stdio.h>

# include<conio.h>

void main()

{

 void fib(int);

          int n;

         clrscr();

         printf("\n\t\FIBONACCI USING RECURSION");

         printf("\n\t\t~~~~~~~~~~~~~~~~~~~~~~~~~~~");

         printf("\nEnter the number of terms : ");

         scanf("%d",&n);

         fib(n);

        getch();

 }

void fib(int d)

 {

 int i,t,a=0,b=1;

             if(d==1)

             {

             printf("%d",a); }

 else if (d==2)

 {

      printf("%d \t %d",a,b);

   }

 else

 {

       printf("%d \t %d",a,b);

       for(i=2;i<d;i++)

{

       t=a+b;

       printf("\t%d",t);

       a=b;

        b=t;

     }

   }

}

OUTPUT:

                FIBONACCI USING RECURSION

                ~~~~~~~~~~~~~~~~~~~~~~~~~~~

Enter the number of terms: 6

0        1      1       2       3       5

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C PROGRAM FOR FIBONNACI SERIES

/*C PROGRAM FOR   FIBONNACI SERIES */

#include<stdio.h>

#include<conio.h>

void main()

{

       int i,a=0,b=1,t=0,n;

       clrscr();

       printf("\n\t\tFIBONNACI SERIES");

       printf("\n\t\t~~~~~~~~~~~~~~~~");

       printf("\nEnter the number of terms:");

       scanf("%d",&n);

       printf("%d\t%d",a,b);

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

{

       t=a+b;

       printf("\t%d",t);

       a=b;

       b=t;

   }

   getch();

}

OUTPUT:

                FIBONNACI SERIES

                ~~~~~~~~~~~~~~~~

Enter the number of terms:8

0       1       1       2       3       5       8       13

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C PROGRAM FOR FLOYD’S TRIANGLE

 /* C PROGRAM FOR  FLOYD’S TRIANGLE */

#include<stdio.h>

#include<conio.h>

void main()

{

    int i,j,rows;

    clrscr();

    printf("\n\t\tFLOYD'S TRIANGLE");

    printf("\n\t\t~~~~~~~~~~~~~~~~");

    printf("\nEnter the rows:");

    scanf("%d",&rows);

    for(i=1;i<=rows;i++)

   {

     for(j=1;j<=i;j++)

     {

      printf("*");

    }

     printf("\n");

   }

  getch();

}

OUTPUT:

                FLOYD'S TRIANGLE

               

Enter the rows: 5

*

**

***

****

*****

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C PROGRAM FOR PASCAL TRIANGLE

/* C PROGRAM FOR  PASCAL TRIANGLE*/

#include<stdio.h>

#include<conio.h>

void main()

{

      int a[10][10],r,i,j,t;

      clrscr();

      printf("\n\t\t PASCAL TRIANGLE");

      printf("\n\t\t ~~~~~~~~~~~~~~~~");

      printf("\n Enter the row values:");

      scanf("%d",&r);

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

 {

       a[i][i]=1;

       a[i][1]=1;

  }

  i=3;

  while(i<=r)

   {

      t=2;

while(t<i)

{

      a[i][t]=a[i-1][t-1]+a[i-1][t];

      t++;

    }

     i++;

}

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

{

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

{

     printf("%d\t",a[i][j]);

   }

    printf("\n\n");

   }

  getch();

}

OUTPUT:

                 PASCAL TRIANGLE

                 ~~~~~~~~~~~~~~~~

 Enter the row values: 5

1

1       1

1       2       1

1       3       3       1

1       4       6       4       1

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C PROGRAM FOR COSINE SERIES

/*C PROGRAM FOR  COSINE SERIES */

#include<stdio.h>

#include<conio.h>

#include<math.h>

#define pi 3.14

void main()

{

    int n,i,j;

    float x,x1,sum,p,f,k;

    clrscr();

    printf("\n\tCOSINE SERIES");

    printf("\n\t~~~~~~~~~~~~~~~");

    printf("\nEnter the value of n:");

    scanf("%d",&n);

    printf("\nEnter the value for x:");

    scanf("%f",&x);

    x1=x*(pi/180);

    sum=1;

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

{

     p=pow(x1,i);

     f=1;

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

{

     f=f*j;

}

     k=1;

     k=k*(-1);

     sum=sum+(p/f)*k;

}

     printf("\n The sum of series %f",sum);

     printf("\n The cosine series:%f",cos(x1));

     getch();

}

OUTPUT:

        COSINE SERIES

        ~~~~~~~~~~~~~~

Enter the value of n: 2

Enter the value for x: 4

 The sum of series: 0.995127

 The cosine series: 0.997567

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C PROGRAM FOR EXPONENTIAL SERIES

                                    /* C PROGRAM FOR  EXPONENTIAL SERIES*/

#include<stdio.h>

#include<conio.h>

#include<math.h>

#define pi 3.14

void main()

{

       int n,i,j;

       float x,sum,p,f;

       clrscr();

       printf("\n\tEXPONENTIAL SERIES");

       printf("\n\t~~~~~~~~~~~~~~~~~~");

       printf("\n Enter the value of n:");

       scanf("%d",&n);

       printf("\n Enter the value for x:");

       scanf("%f",&x);

       x=x*(pi/180);

       sum=1;

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

{

       p=1;

       f=1;

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

{

       p=p*x;

       f=f*j;

}

       sum=sum+(p/f);

  }

       printf("\n The sum of series: %f",sum);

       printf("\n The cosine series: %f",exp(x));

getch();

}

OUTPUT:

        EXPONENTIAL SERIES

        ~~~~~~~~~~~~~~~~~~~~~~

 Enter the value of n: 4

 Enter the value for x: 6

 The sum of series: 1.110340

 The cosine series: 1.110340

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C PROGRAM FOR SINE SERIES

                             /*  C PROGRAM FOR SINE SERIES*/

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{

      int n,i,j,k,f;

      float x,x1,sum,p;

      clrscr();

      printf("\n\t SINE SERIES\n");

      printf("\n\t~~~~~~~~~~~~~~~");

      printf("\n Enter the value of n:");

      scanf("%d",&n);

      printf("\n Enter the value of x:");

      scanf("%f",&x);

      x1=x*(3.14/180);

      sum=x1;

      for(i=3;i<=n*2;i+=2)

     {

       p=pow(x1,i);

       f=1;

       for(j=1;j<=i;j++)

       {

        f=f*j;

       }

       k=-1;

       k=k*(-1);

       sum=sum+(p/f)*k;

     }

     printf("\n Sum of the series:%f",sum);

     printf("\n Sine series value:%f",sin(x1));

     getch();

}

OUTPUT:

         SINE SERIES

        ~~~~~~~~~~~

 Enter the value of n:2

 Enter the value of x:3

 Sum of the series:0.052357

 Sine series value:0.052309

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C PROGRAM FOR CONCATENATING TWO STRING

/*C PROGRAM FOR  CONCATENATING TWO STRING */

#include<stdio.h>

#include<conio.h>

void main()

{

    char s[30],s1[30],s2[30];

    int i,j;

    clrscr();

    printf("\n\t CONCATENATING TWO STRING");

    printf("\n\t~~~~~~~~~~~~~~~~~~~~~~~~~~");

    printf("enter the first string");

    scanf("%s",s);

    printf("enter the second string");

    scanf("%s",s1);

    for(i=0;s[i]!='\0';i++)

    s2[i]=s[i];

    for(j=0;s1[j]!='\0';j++)

    s2[i++]=s1[j];

    s2[i]='\0';

    printf("the concatenated string is %s",s2);

    getch();

}

OUTPUT:

        

       

 CONCATENATING TWO STRING

Enter the first string: RAJ.

 Enter the second string: KUMAR

The concatenated string is: RAJKUMAR

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C PROGRAM FOR FINDING THE SUBSTRING

/*  C PROGRAM FOR  FINDING THE SUBSTRING */

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

        char str[10],sstr[10];

        int m1,m2,i,j,temp;

        clrscr();

        printf("\n\t\t FINDING THE SUBSTRING");

        printf("\n\t\t ~~~~~~~~~~~~~~~~~~~~~~");

        printf("\n Enter the string:");

        scanf("%s",str);

        printf("\n Enter the substring:");

        scanf("%s",sstr);

        m1=strlen(str);

        m2=strlen(sstr);

        j=0;

for(i=0;i<=m1;i++)

{

      if(str[i]==sstr[j])

      j++;

      else

      j=0;

      if(j==m2)

      temp=0;

  }

      if(temp==0)

      printf("\nThe string is found:");

      else

      printf("\nThe string is not found:");

      getch();

  }

OUTPUT:

                 FINDING THE SUBSTRING

                 ~~~~~~~~~~~~~~~~~~~~~~

 Enter the string: GOODMORNING

 Enter the substring: GOOD

The string is found.

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C PROGRAM FOR REVERSING THE STRING

/*  C PROGRAM FOR REVERSING THE STRING */

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

       int n,i;

      char a[20];

      clrscr();

      printf("\n\t\tREVERSING THE STRING");

      printf("\n\t\t--------------------");

      printf("\n\t\tINPUT");

      printf("\n\t\t-----");

      printf("\nEnter the string:");

      scanf("%s",a);

      n=strlen(a);

      printf("\n\t\tOUTPUT");

      printf("\nThe result is:");

    for(i=n;i>=0;i--)

    {

       printf("%c",a[i]);

     }

 getch();

}

           

OUTPUT:

     REVERSING THE STRING

                --------------------

                INPUT

                     Enter the string:RAJKUMAR

               OUTPUT

                   The result is: RAMUKJAR

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C PROGRAM FOR FINDING LENGTH OF THE STRING

/*C PROGRAM FOR FINDING LENGTH OF THE STRING*/

#include<stdio.h>

#include<conio.h>

void main()

{

      char str[50];

      int k;

      clrscr();

      printf("\n\t FINDING LENGTH OF THE STRING");

      printf("\n\t ~~~~~~~~~~~~~~~~~~~~~~~~~~~~");

      printf("\n Enter the string:");

      gets(str);

      k=0;

      while(str[k]!='\0')

       k++;

      printf("\n The length is %d",k);

      getch();

}

OUTPUT:

        FINDING LENGTH OF THE STRING

         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`

 Enter the string: KRK

 The length is : 3

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