Month: October 2011

C program to find the character type.

Posted on by Sandeepa Nadahalli
C Program to find the Character types. Here we used the isdidit(), isalpa(), and isspace() functions.isdigit() function returns true if argument is a decimal digit, otherwise false. isalpa() function returns true if argument is a defined set of characters in c, otherwise false. isspace() function returns true if argument is a white space character (one of ‘ ‘ ‘f’ ‘n’ ‘r’ ‘t’ ‘v’), otherwise false. 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 <ctype.h>   

#define FALSE 0
#define TRUE  1

    /* function declarations   */
int char_type(char);

main()
   {
   char ch;
   /* get a character from the keyboard  */
   printf(" Please enter a charcater => ");
   ch = getc(stdin);

   char_type(ch); /* Figure out the character type  */
   }


int char_type(char ch)
   {
   /* returns non zero if A-Z or a-z  */
   if ( isalpha(ch) != FALSE)
      printf("%c is an Alpha character.n",ch);

   /* returns non zero if 0-9    */
   if ( isdigit(ch) != FALSE)
      printf("%c is a numeric character.n",ch);

   /* returns non zero if a space, CR, Tab, NL FF  */
   if ( isspace(ch) != FALSE)
      printf("%c is white spacen", ch);

   }
Read more Similar C Programs
Searching in C

C Strings

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

our page!

Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button)

Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to demonstrate extern variable.

Posted on by Sandeepa Nadahalli
C Program to demonstrate extern variable. Extern variables are very useful in c,when the source code is in the two or more files, you can refer the variables from one file to another using extern variables. Extern variables are also global variable,but in explicit manner. 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 write_extern(void);

extern int count;

void write_extern(void) 
{
 printf("count is %in", count);
}

int count = 5;

main() 
{
 write_extern();
}

Read more Similar C Programs
C Strings

Simple C Programs

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

our page!

Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button)

Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to demonstrate functions.

Posted on by Sandeepa Nadahalli
C Program to demonstrate functions. C Functions are block of codes, performs the specific task. Default function in C is main(). Advantages of the functions are easy to understand, coding, well defined tasks, easy error handling. There are several ways to call the functions like, pass by value, pass by reference etc.. 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>
int add( int, int);    /* Function declaration  */

main()
{
 int i=1;
 printf("i starts out life as %d.", i);

 i = add(1, 1);   /* Function call         */

 printf(" And becomes %d after function is executed.n", i);
}

/************************************************************************/

int add( int a, int b)    /* Function definition   */
{
 int c;
 c = a + b;
 return c;
}
Read more Similar C Programs
C Strings

Simple C Programs

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

our page!

Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button)

Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to Find out the size of the different data types

Posted on by Sandeepa Nadahalli
C Program to find the Size of Different data types. In This program we, find the size of the datatypes in c using sizeof() operator. sizeof() operator returns the its argument memory 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>
main()
{

 printf("    short int is %2d bytes n", sizeof(short int));
 printf("          int is %2d bytes n", sizeof(int));
 printf("        int * is %2d bytes n", sizeof(int *));
 printf("     long int is %2d bytes n", sizeof(long int));
 printf("   long int * is %2d bytes n", sizeof(long int *));
 printf("   signed int is %2d bytes n", sizeof(signed int));
 printf(" unsigned int is %2d bytes n", sizeof(unsigned int));
 printf("n");
 printf("        float is %2d bytes n", sizeof(float));
 printf("      float * is %2d bytes n", sizeof(float *));
 printf("       double is %2d bytes n", sizeof(double));
 printf("     double * is %2d bytes n", sizeof(double *));
 printf("  long double is %2d bytes n", sizeof(long double));
 printf("n");
 printf("  signed char is %2d bytes n", sizeof(signed char));
 printf("         char is %2d bytes n", sizeof(char));
 printf("       char * is %2d bytes n", sizeof(char *));
 printf("unsigned char is %2d bytes n", sizeof(unsigned char));
}
Read more  C Programs
Array In C

Simple C Programs

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

our page!

Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button)

Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to demonstrate the ‘atof’ and ‘gets’ functions.

Posted on by Sandeepa Nadahalli
C Program to demonstrate the ‘atof’ and ‘gets’ functions. atof function converts the intial nptr string to the double. atof means ASCII to float. gets function reads string from the input stream. puts function prints string to the output stream This program will multiply to floating point numbers. The program will accept invalid data, and give you crap results as a result. 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 <stdlib.h>  

main()
{
 char str1[80], str2[80]; /* define a couple o' strings. */
 double result;  /* Result of multiplication. */

 puts ("This program will multiply to floating point numbers.");
 puts ("The program will accept invalid data, and give you");
 puts ("crap results as a result.n");
 puts ("Please enter the first number.");
 gets(str1);

 puts ("And the second.");
 gets(str2);

 result = atof(str1) * atof(str2);
 printf("Answer is %8.2fn", result);
}


Read more Similar C Programs
C Strings

Simple C Programs

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

our page!

Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button)

Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to Demonstrate getting the parameters from the command line.

Posted on by Sandeepa Nadahalli
C Program to getting the parameters from the command line. To pass the arguments from command line, in main function we have to declare two arguments . First one is number of arguments passed to the program and other one is pointer variable which gives the list of arguments passed. 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>

main(int argc, char *argv[]) {
 int count;

 /*  Main takes two variables 'argc' is the number of parms on the 
  *  command line and 'argv' is a pointer to each of the parameters.
  *
  * int argc    -- integer number called 'argc'
  * char *argv[] -- Character pointer array!
  */

 printf("%i parameters entered on the command line.n", argc);

 /*
  * progname  argc = 1
  * progname parm1 parm2 argc = 3
  */

 /* 
  * We take 1 from argc because 
  * the argv array starts at zero 
  * an ends at argc -1
  */

 for (count = 0; count <= argc - 1; count++) {
  /* printf expects a pointer 
   * to the text 
   */

  printf("parm %d is %sn", count, argv[count]);
 }
}
Read more Similar C Programs
C Strings

Simple C Programs

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

our page!

Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button)

Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to implement the Newton- Gregory forward interpolation

Posted on by Sandeepa Nadahalli
C Program to implement the Newton- Gregory forward interpolation. Newtons – Gregory forward difference formula is a finite difference identity capable of giving an interpolated value between the tabulated points {fk} in terms of the first value f0 and powers of the forward difference Δ. In this program we used the multidimensional arrays and arrays in c. 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<conio.h>
#define MaxN 100
#define Order_of_diff 4

void main ()
{
 float arr_x[MaxN+1], arr_y[MaxN+1], numerator=1.0, denominator=1.0, x, y, p, h, diff_table[MaxN+1][Order_of_diff+1];
 int i,j,n,k;
 clrscr();

 printf("Enter the value of n n");
 scanf("%d",&n);
 printf("Enter the values of x and y");

 for(i=0; i<=n; i++)
  scanf("%f%f", &arr_x[i], &arr_y[i]);
 printf("Enter the value of x at which value of y is to be calculated");
 scanf("%f", &x);
 h=arr_x[1]-arr_x[0];

 for(i=0; i<=n-1; i++)
  diff_table[i][1]=arr_y[i+1]-arr_y[i];/*Creating the difference table and calculating first order differences*/
 for(j=2; j<=Order_of_diff; j++)/*Calculating higher order differences*/
  for(i=0; i<=n-j; i++)
   diff_table[i][j]=diff_table[i+1][j-1] - diff_table[i][j-1];
 i=0;

 while(!(arr_x[i]>x)) /* Finding x0 */
  i++;
 i--;
 p=(x-arr_x[i])/h;
 y=arr_y[i];

 for (k=1; k<=Order_of_diff; k++)
 {
  numerator *=p-k+1;
  denominator *=k;
  y +=(numerator/denominator)*diff_table[i][k];
 }
 printf("When x=%6.1f, y=%6.2fn",x, y);
 getch();
}

Read more Similar C Programs
Learn C Programming

Simple C Programs

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

our page!

Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button)

Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to implement the Lagrange interpolation

Posted on by Sandeepa Nadahalli
C Program to implement the Lagrange interpolation. Lagrange interpolation is the polynomial interpolation. It is the process of passing a polynomial of degree n-1 through n points. In this program we used the arrays in c. 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<conio.h>
#define MaxN 90

void main()
{
 float arr_x[MaxN+1], arr_y[MaxN+1], numerator, denominator, x, y=0;
 int i, j, n;
 clrscr();
 printf("Enter the value of n: n");
 scanf("%d", &n);
 printf("Enter the values of x and y: n");
 for(i=0; i<=n; i++)
  scanf("%f%f", &arr_x[i], &arr_y[i]);
 printf("Enter the value of x at which value of y is to be calculated: ");
 scanf("%f", &x);
 for (i=0; i<=n; i++)
 {
  numerator=1;
  denominator=1;
  for (j=0; j<=n; j++)
   if(j!=i)
   {
    numerator *= x-arr_x[j];
    denominator *= arr_x[i]-arr_x[j];
   }
  y+=(numerator/denominator)*arr_y[i];
 }
 printf("When x=%4.1f y=%7.1fn",x,y);
 getch();
}



Read more Similar C Programs
Learn C Programming

Simple C Programs

You can easily select the code by double clicking on the code area above. To get regular updates on new C programs, you can Follow @c_program You can discuss these programs on our Facebook Page. Start a discussion right now,

our page! Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button) Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to check the given number is perfect or not.

Posted on by Sandeepa Nadahalli
C Program to check the given number is perfect or not?.  Perfect number is a positive integer that is equal to the sum of its proper positive divisors. example 6, divisor of 6 are 1, 2,3. Sum of divisors is 1+2+3=6.
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>
int main(){
 int num,i=1,sum=0;

 printf("Enter a number: ");
 scanf("%d",&num);

 while(i<num){
  if(num%i==0)
   sum=sum+i;
  i++;
 }
 if(sum==num)
  printf("%d is a perfect number",i);
 else
  printf("%d is not a perfect number",i);

 return 0;
}
Read more Similar C Programs
Learn C Programming

Number System

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

our page!

Share this program with your Facebook friends now! by liking it

(you can send this program to your friend using this button)

Like to get updates right inside your feed reader? Grab our feed!

(c) www.c-program-example.com

C Program to print Pascal’s Triangle

Posted on by Sandeepa Nadahalli

Pascal Triangle is started by 1, then followed by The binomial coefficient (n,k),
where n is the non negative integer and k is the integer between 0 and n.
Pascal triangle is the triangular 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"
int main() 
{
    int r, i, j, b, num;
    printf("How many lines do you want?");
    scanf("%d", &r);
    b = r;
    for(i=0;i<r;i++) 
    {
        num = 1;
        for(j=0;j<=i;j++) 
        {
            printf("%d", num);
            num = (num * (i-j)/(j+1));
        }
        printf("n");
    }
}

You can easily select the code by double clicking on the code area above. To get regular updates on new C programs, you can Follow @c_program You can discuss these programs on our Facebook Page.

Like to get updates right inside your feed reader? Grab our feed!

To browse more C Programs visit this link