To Be Familiarize With User Defined Function

1. WAP to find the largest number among three numbers using user defined function.
2. WAP to read values for x and n . Evaluate Y= x^n.
3. WAP which ask two operands and a operator, passes them to a function, performs the corresponding operations and returns the result to calling function.
4. WAP to display whether the number is palindrome or not using function.
5. WAP to generate a series 0 1 1 2 3 5 8 13 21.....up to n terms using a function.
6. WAP to print all the primes numbers between the two initial and final ranges.

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1.) Question 1

#include <stdio.h>

#include <conio.h>

int large (int ,int ,int );

void main ()

{

int l,a,b,c;

clrscr ();

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

scanf ("%d%d%d",&a,&b,&c);

l=large(a,b,c);

printf ("The largest is %d.\n",l);

getch ();

}

int large (int x,int y,int z)

{

if (x>y&&x>z)

return x;

else if (y>x&&y>z)

return y;

else

return z;

}

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

2.) Question 2

#include <stdio.h>

#include <conio.h>

int power (int,int);

void main ()

{

int x,n,r;

clrscr ();

printf ("Enter the value of x and n for y=x^n.\n");

scanf ("%d%d",&x,&n);

r=power (x,n);

printf ("The value of y is %d",r);

getch ();

}

int power (int a,int b)

  {

  int i,p=1;

  for (i=1;i<=b;i++)

      {

      p=p*a;

      }

  return p;

  }

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

3.) Question 3

#include <stdio.h>

#include <conio.h>

float opr (int ,char , int );

void main ()

{

char op;

int a,b;

float r;

clrscr ();

printf ("Enter first operand:");

scanf ("%d",&a);

printf ("Enter operator:");

scanf (" %c",&op);

printf ("Enter second operand:");

scanf ("%d",&b);

r=opr(a,op,b);

printf ("The result is %f",r);

getch ();

}

float opr (int x,char o,int y)

  {

  float rt;

  switch (o)

    {

     case '+': rt=x+y;  break;

     case '-': rt=x-y;  break;

     case '*': rt=x*y;  break;

     case '/': rt=x/y;  break;

    }

    return rt;

  }

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

4.) Question 4

#include <stdio.h>

#include <conio.h>

int palin(int x);

void main ()

{

int n,rev;

clrscr ();

printf ("Enter a number:\n");

scanf ("%d",&n);

rev= (palin(n));

if (rev==n)

printf ("Palindrome.");

else

printf ("Not Palindrome.");

getch ();

}

int palin(int x)

  {

  int d,r=0;

  do

    {

    d=x%10;

    r=r*10+d;

    x=x/10;

    }while (x!=0);

    return r;

  }

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

5.) Question 5

#include <stdio.h>

#include <conio.h>

int fib (int );

void main ()

{

int i,n;

clrscr ();

printf ("Enter no of terms:\n");

scanf ("%d",&n);

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

{

printf ("%d, ",fib (i));

}

getch ();

}

int fib (int f)

 {

 if (f<=0)

 return 0;

 else if (f==1)

 return 1;

 else

 return (fib (f-1)+fib (f-2));

 }

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

6.) Question 6

#include <stdio.h>

#include <conio.h>

void prime (int ,int );

void main ()

{

int a,b;

clrscr ();

printf ("Enter initial range:");

scanf ("%d",&a);

printf ("Enter final range:");

scanf ("%d",&b);

prime (a,b);

getch ();

}

void prime (int x,int y)

  {

  int i,j,c;

  for (i=x;i<=y;i++)

    {c=0;

    for (j=1;j<=i;j++)

      {

      if (i%j==0)

      c=c+1;

      }

      if (c==2)

      printf ("%d, ",i);

    }

  }