Simple C Program

C Program to demonstrate the strstr function.

Posted on by Sandeepa Nadahalli
C Program to demonstrate the strstr function.
strstr function finds the substring in a string. strstr() returns pointer of the first occurrence of the string other wise it returns the null pointer is returned.
In this program strstr returns a pointer into ‘string’ if ‘test’ is found, if not found, NULL is returned. 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 info@c-program-example.com
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                      Happy Coding
***********************************************************/


#include <stdio.h>
#include <string.h>

main()
{
 char string[]="string to search";
 char   test[]="sear";
 if (strstr(string, test)) puts("String found");

}
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C Program to demonstrate strpbrk function.

Posted on by Sandeepa Nadahalli
Write C programt to demonstrate strpbrk function.
strpbrk function locate the first occurrence pointed by the of string s1 from the string pointed to by s2. In this program, We Turns miscellaneous field separators into just a space separating tokens for easy parsing by SSCANF. Eventually, the character separators and replacement character will be passed in as strings. 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 info@c-program-example.com
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                      Happy Coding
***********************************************************/
#include <stdio.h>
#include <string.h>
#include <strings.h>

#define LINE_BUF  100

void find_comment(char *);

main()
{
 char  line[LINE_BUF];
 char *sep;
 int   var1, var2;

 while (fgets(line, LINE_BUF, stdin)) {

  /*
   * Check this out:  Since SEP is a pointer to type char, when line is
   * assigned to sep, really the first address is assigned to sep. LINE
   * is the address of the start of the string.  In contrast, LINE[0]
   * is the first character of the string.
   */

  sep = line;

  while (sep != 0) {
   sep = strpbrk(line, ";.&:,");
   if (sep != 0)
    *sep = ' ';
  }
  fputs(line, stdout);
 }
 return 0;
}
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C Program to demonstrate sscanf statement.

Posted on by Sandeepa Nadahalli
C Program to demonstrate the ‘sscanf’ statement.
sscanf statement reads formatted data from the string, Different syntax of sscanf are:
A = sscanf(str, format)
A = sscanf(str, format, sizeA)
[A, count] = sscanf(…)
[A, count, errmsg] = sscanf(…)
[A, count, errmsg, nextindex] = sscanf(…).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 info@c-program-example.com
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                      Happy Coding
***********************************************************/

#include <stdio.h>

main()
{
 char Host[64];
 char User[64];
 char *Buff = "Jobname=job1 Hostname=arnamul User=leslim Time=11:15";
 /*            <---------->          <-----> <---------> <-------->
  *              |                      |         |           |
  *              |           ------------         |           |
  *              |           |   ------------------           V
  *              |           |   |                       NULL
  *              V           V   V                                    */
 sscanf (Buff, "%*s Hostname=%s %s", Host, User);

 printf("Host is %sn", Host);
 printf("User is %sn", User);
 exit(0);
}


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C Program to demonstrate sprintf statement.

Posted on by Sandeepa Nadahalli
C Program to demonstrate the ‘sprintf‘ statement. This example is a bit lame as the same effect can be seen with a ‘printf’. But, it does show a string being built and passed into a function. 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 info@c-program-example.com
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                      Happy Coding
***********************************************************/

#include <stdio.h>

main()
{
 int i=1;  /* Define an integer variable.    */
 char message[80]; /* Text string      */

 /* format text and put into 'message' this a great
  * improvement over using 'strcpy' and 'strcat' to
  * build a text string.
  */
 sprintf (message, "i is %i", i); 
 /* I may be stating the obvious but a '