C program to find the size of a union.

Posted on October 4, 2011 by Sandeepa Nadahalli

C program to find the size of a union. Union is a collection of different data types like a structure but it gives the single piece of memory for all data types. In this program we use the sizeof() operator to find the size of union. sizeof() return the size of data types in bytes. Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                                  Happy Coding
***********************************************************/

  
#include <stdio.h>

void main()
{
 union sample
 {
  int   m;
  float n;
  char  ch;
 };

 union sample u;

 printf("The size of union =%dn", sizeof(u));

 /*initialization */

 u.m = 25;
 printf("%d %f %cn", u.m, u.n,u.ch);

 u.n = 0.2;
 printf("%d %f %cn", u.m, u.n,u.ch);

 u.ch = 'p';
 printf("%d %f %cn", u.m, u.n,u.ch);
}     /*End of main() */

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C Program to sort the matrix rows and columns.

Posted on October 3, 2011 by Sandeepa Nadahalli

C Program to sort the matrix rows and columns. This C program accept a order MxN Matrix, and sort all rows of the matrix in ascending order and all columns in descending order . In this program, we use the for statement to read two dimension arrays. Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                                  Happy Coding
***********************************************************/


#include <stdio.h>

void main ()
{
 static int ma[10][10],mb[10][10];
 int i,j,k,a,m,n;

 printf ("Enter the order of the matrix n");
 scanf ("%d %d", &m,&n);

 printf ("Enter co-efficients of the matrix n");
 for (i=0;i<m;++i)
 {
  for (j=0;j<n;++j)
  {
   scanf ("%d",&ma[i][j]);
   mb[i][j] = ma[i][j];
  }
 }
 printf ("The given matrix is n");
 for (i=0;i<m;++i)
 {
  for (j=0;j<n;++j)
  {
   printf (" %d",ma[i][j]);
  }
  printf ("n");
 }

 printf ("After arranging rows in ascending ordern");
 for (i=0;i<m;++i)
 {
  for (j=0;j<n;++j)
  {
   for (k=(j+1);k<n;++k)
   {
    if (ma[i][j] > ma[i][k])
    {
     a = ma[i][j];
     ma[i][j] = ma[i][k];
     ma[i][k] = a;
    }
   }
  }
 }      /* End of outer for loop*/

 for (i=0;i<m;++i)
 {
  for (j=0;j<n;++j)
  {
   printf (" %d",ma[i][j]);
  }
  printf ("n");
 }

 printf ("After arranging the columns in descending order n");
 for (j=0;j<n;++j)
 {
  for (i=0;i<m;++i)
  {
   for (k=i+1;k<m;++k)
   {
    if (mb[i][j] < mb[k][j])
    {
     a = mb[i][j];
     mb[i][j] = mb[k][j];
     mb[k][j] = a;
    }
   }
  }
 }       /* End of outer for loop*/

 for (i=0;i<m;++i)
 {
  for (j=0;j<n;++j)
  {
   printf (" %d",mb[i][j]);
  }
  printf ("n");
 }

}  /*End of main() */

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C program to find the sparse matrix

Posted on October 3, 2011 by Sandeepa Nadahalli

C program to accept a matrix and determine whether it is a sparse matrix or not?. A sparse matrix is a matrix, which has more zero elements than nonzero elements. Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                                  Happy Coding
***********************************************************/


#include <stdio.h>

void main ()
{
 static int m1[10][10];
 int i,j,m,n;
 int counter=0;

 printf ("Enter the order of the matixn");
 scanf ("%d %d",&m,&n);

 printf ("Enter the co-efficients of the matixn");
 for (i=0;i<m;++i)
 {
  for (j=0;j<n;++j)
  {
   scanf ("%d",&m1[i][j]);
   if (m1[i][j]==0)
   {
    ++counter;
   }
  }
 }
 if (counter>((m*n)/2))
 {
  printf ("The given matrix is sparse matrix n");
 }
 else
  printf ("The given matrix is not a sparse matrix n");

 printf ("There are %d number of zeros",counter);

}       /* EN dof main() */

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C Program to interchange the main diagonal elements of the matrix

Posted on October 3, 2011 by Sandeepa Nadahalli

C Program to interchange the main diagonal elements of the matrix. This Program will accept a matrix of order M x N and store its elements and interchange the main diagonal elements of the matrix with that of the secondary diagonal elements . Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                                  Happy Coding
***********************************************************/
void main ()
{

 static int ma[10][10];
 int i,j,m,n,a;

 printf ("Enetr the order of the matix n");
 scanf ("%d %d",&m,&n);

 if (m ==n )
 {
  printf ("Enter the co-efficients of the matrixn");
  for (i=0;i<m;++i)
  {
   for (j=0;j<n;++j)
   {
    scanf ("%dx%d",&ma[i][j]);
   }
  }

  printf ("The given matrix is n");
  for (i=0;i<m;++i)
  {
   for (j=0;j<n;++j)
   {
    printf (" %d",ma[i][j]);
   }
   printf ("n");
  }

  for (i=0;i<m;++i)
  {
   a = ma[i][i];
   ma[i][i]   = ma[i][m-i-1];
   ma[i][m-i-1] = a;
  }

  printf ("THe matrix after changing the n");
  printf ("main diagonal & secondary diagonaln");
  for (i=0;i<m;++i)
  {
   for (j=0;j<n;++j)
   {
    printf (" %d",ma[i][j]);
   }
   printf ("n");
  }
 }
 else
  printf ("The givan order is not square matrixn");

}    /* end of main() */

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C program to accept N numbers and arrange them in an descending order

Posted on October 3, 2011 by Sandeepa Nadahalli

C Sorting,
C program to accept N numbers and arrange them in an descending order. Program will accept the array of elements, and returns the elements in descending order. Program use the Bubble sort Technique to sort the Array. Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                                  Happy Coding
***********************************************************/



#include <stdio.h>

void main ()
{
 int i,j,a,n,number[30];

 printf ("Enter the value of Nn");
 scanf ("%d", &n);

 printf ("Enter the numbers n");
 for (i=0; i<n; ++i)
  scanf ("%d",&number[i]);

 for (i=0; i<n; ++i)
 {
  for (j=i+1; j<n; ++j)
  {
   if (number[i] < number[j])
   {
    a= number[i];
    number[i] = number[j];
    number[j] = a;
   }
  }
 }

 printf ("The numbers arrenged in descending order are given belown");
 for (i=0; i<n; ++i)
  printf ("%dn",number[i]);
}                              /* End of main() */

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C Program to multiply given number by 4 using bitwise operators

Posted on October 3, 2011 by Sandeepa Nadahalli

C Program to multiply given number by 4 using bitwise operators. Bitwise operators allows to cahnge or edit the specific bits within an integer. Program will multiply a given number by 4 using left shift(<<) bitwise operator. Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                                  Happy Coding
***********************************************************/

/*    c program to multiply given number by 4     *
 *    using bitwise operators                             */

#include <stdio.h>

void main()
{
 long number, tempnum;

 printf("Enter an integern");
 scanf("%ld",&number);
 tempnum = number;
 number = number << 2;   /*left shift by two bits*/

 printf("%ld x 4 = %ldn", tempnum,number);
}

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C Program to check if a given matrix is an identity matrix

Posted on October 3, 2011 by Sandeepa Nadahalli

C Program to check if a given matrix is an identity matrix or not. If I is theIdentity Matrix,then for any matrix A, IA=AI=A. Program will check the givan matrix is identity or not, and prints the appropriate message. Read more about C Programming Language .

–>

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                                  Happy Coding
***********************************************************/
/* C Program  Write a C Program to check if a given matrix is an identity matrix */
#include <stdio.h>

void main()
{
 int A[10][10];
 int i, j, R, C, flag =1;

 printf("Enter the order of the matrix An");
 scanf("%d %d", &R, &C);

 printf("Enter the elements of matrix An");
 for(i=0; i<R; i++)
 {
  for(j=0; j<C; j++)
  {
   scanf("%d",&A[i][j]);
  }
 }
 printf("MATRIX A isn");
 for(i=0; i<R; i++)
 {
  for(j=0; j<C; j++)
  {
   printf("%3d",A[i][j]);
  }
  printf("n");
 }

 /* Check for unit (or identity) matrix */

 for(i=0; i<R; i++)
 {
  for(j=0; j<C; j++)
  {
    if((A[i][i] != 1) || (( i != j) && (A[i][j] != 0)))
   {
    flag = 0;
    break;
   }
  }
 }

 if(flag == 1 )
  printf("It is identity matrixn");
 else
  printf("It is not a identity matrixn");
}

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–>

C Program to accept two matrices and check if they are equal

Posted on October 3, 2011 by Sandeepa Nadahalli

C Program to accept two matrices and check if they are equal or not?. Program will accept the two matrices, and return true if their order and their elements are equal, i.e. for all , if a[i][j]==b[i][j]. Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                                  Happy Coding
***********************************************************/

/* Write a C Program to accept two matrices and check if they are equal */

#include <stdio.h>
#include <stdlib.h>

void main()
{
 int A[10][10], B[10][10];
 int i, j, R1, C1, R2, C2, flag =1;

 printf("Enter the order of the matrix An");
 scanf("%d %d", &R1, &C1);

 printf("Enter the order of the matrix Bn");
 scanf("%d %d", &R2,&C2);

 printf("Enter the elements of matrix An");
 for(i=0; i<R1; i++)
 {
  for(j=0; j<C1; j++)
  {
   scanf("%d",&A[i][j]);
  }
 }

 printf("Enter the elements of matrix Bn");
 for(i=0; i<R2; i++)
 {
  for(j=0; j<C2; j++)
  {
   scanf("%d",&B[i][j]);
  }
 }

 printf("MATRIX A isn");
 for(i=0; i<R1; i++)
 {
  for(j=0; j<C1; j++)
  {
   printf("%3d",A[i][j]);
  }
  printf("n");
 }

 printf("MATRIX B isn");
 for(i=0; i<R2; i++)
 {
  for(j=0; j<C2; j++)
  {
   printf("%3d",B[i][j]);
  }
  printf("n");
 }

 /* Comparing two matrices for equality */

 if(R1 == R2 && C1 == C2)
 {
  printf("Matrices can be comparedn");
  for(i=0; i<R1; i++)
  {
   for(j=0; j<C2; j++)
   {
    if(A[i][j] != B[i][j])
    {
     flag = 0;
     break;
    }
   }
  }
 }
 else
 {  printf(" Cannot be comparedn");
 exit(1);
 }

 if(flag == 1 )
  printf("Two matrices are equaln");
 else
  printf("But,two matrices are not equaln");

}

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C Program To Compute X ^ N

Posted on October 3, 2011 by Sandeepa Nadahalli

C program to compute the value of X ^ N, given X and N as inputs. Program accepts two integers x, n and computes the power of x to the n by using recursion function power(). Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                        Happy Coding
***********************************************************/


#include <stdio.h>
#include <math.h>

void main()
{
 long int x,n,xpown;
 long int power(int x, int n);

 printf("Enter the values of X and Nn");
 scanf("%ld %ld",&x,&n);

 xpown = power (x,n);

 printf(" %d to the power %d = %ldn",x,n,xpown);
}

/*Recursive function to computer the X to power N*/

long int power(int x, int n)
{
 if (n==1)
  return(x);
 else if ( n%2 == 0)
  return (pow(power(x,n/2),2));  /*if n is even*/
 else
  return (x*power(x, n-1));     /* if n is odd*/
}

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C Program to implement strlen function

Posted on October 3, 2011 by Sandeepa Nadahalli

Write a c program to find the length of a string without using the built-in function strlen(). Program will calculate the length of the string using for loop by going through each character of the string, till its end. Read more about C Programming Language .

/***********************************************************
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* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                      Happy Coding
***********************************************************/
#include <stdio.h>

void main()
{
 char string[50];
 int  i, length = 0;

 printf("Enter a stringn");
 gets(string);

 for (i=0; string[i] != ''; i++) /*keep going through each */
 {                                 /*character of the string */
  length++;                     /*till its end */
 }
 printf("The length of a string is the number of characters in itn");
 printf("So, the length of %s =%dn", string, length);
}

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