Academic Tutorials



English | French | Portugese | German | Italian
Home Advertise Payments Recommended Websites Interview Questions FAQs
News Source Codes E-Books Downloads Jobs Web Hosting
Chats

C Tutorial
Introduction to C Programming
Variables in C
Opertaors in C
Branching Statement in C
Looping Statement in C
C Storage Class
Functions in C
The C Preprocessor
Input/Output Functions in C
File I/O Functions in C
Pointers in C
Arrays in C
Dynamic Memory Allocation in C
Strings in C
Structures in C

HTML Tutorials
HTML Tutorial
XHTML Tutorial
CSS Tutorial
TCP/IP Tutorial
CSS 1.0
CSS 2.0
HLML
XML Tutorials
XML Tutorial
XSL Tutorial
XSLT Tutorial
DTD Tutorial
Schema Tutorial
XForms Tutorial
XSL-FO Tutorial
XML DOM Tutorial
XLink Tutorial
XQuery Tutorial
XPath Tutorial
XPointer Tutorial
RDF Tutorial
SOAP Tutorial
WSDL Tutorial
RSS Tutorial
WAP Tutorial
Web Services Tutorial
Browser Scripting
JavaScript Tutorial
VBScript Tutorial
DHTML Tutorial
HTML DOM Tutorial
WMLScript Tutorial
E4X Tutorial
Server Scripting
ASP Tutorial
PERL Tutorial
SQL Tutorial
ADO Tutorial
CVS
Python
Apple Script
PL/SQL Tutorial
SQL Server
PHP
.NET (dotnet)
Microsoft.Net
ASP.Net
.Net Mobile
C# : C Sharp
ADO.NET
VB.NET
VC++
Multimedia
SVG Tutorial
Flash Tutorial
Media Tutorial
SMIL Tutorial
Photoshop Tutorial
Gimp Tutorial
Matlab
Gnuplot Programming
GIF Animation Tutorial
Scientific Visualization Tutorial
Graphics
Web Building
Web Browsers
Web Hosting
W3C Tutorial
Web Building
Web Quality
Web Semantic
Web Careers
Weblogic Tutorial
SEO
Web Site Hosting
Domain Name
Java Tutorials
Java Tutorial
JSP Tutorial
Servlets Tutorial
Struts Tutorial
EJB Tutorial
JMS Tutorial
JMX Tutorial
Eclipse
J2ME
JBOSS
Programming Langauges
C Tutorial
C++ Tutorial
Visual Basic Tutorial
Data Structures Using C
Cobol
Assembly Language
Mainframe
Forth Programming
Lisp Programming
Pascal
Delphi
Fortran
OOPs
Data Warehousing
CGI Programming
Emacs Tutorial
Gnome
ILU
Soft Skills
Communication Skills
Time Management
Project Management
Team Work
Leadership Skills
Corporate Communication
Negotiation Skills
Database Tutorials
Oracle
MySQL
Operating System
BSD
Symbian
Unix
Internet
IP-Masquerading
IPC
MIDI
Software Testing
Testing
Firewalls
SAP Module
ERP
ABAP
Business Warehousing
SAP Basis
Material Management
Sales & Distribution
Human Resource
Netweaver
Customer Relationship Management
Production and Planning
Networking Programming
Corba Tutorial
Networking Tutorial
Microsoft Office
Microsoft Word
Microsoft Outlook
Microsoft PowerPoint
Microsoft Publisher
Microsoft Excel
Microsoft Front Page
Microsoft InfoPath
Microsoft Access
Accounting
Financial Accounting
Managerial Accounting
Network Sites


Strings in C

Previoushome Next




What is a String?

  • A string is combination of characters.

  • A D V E R T I S E M E N T


  • In computing, a C string is a character sequence stored as a one-dimensional character array and terminated with a null character ('\0', called NUL in ASCII). The name refers to the ubiquitous C programming language which uses this string representation.


  • In c it is required to do some meaningful operations on the strings



Initializing Strings

In C, an array of type char is used to represent a character string, the end of which is marked by a byte set to 0 (also known as a NUL character) The following definitions both set their arrays to the same values

int str1[] = {'a', 'b', 'c', '\0'}; int str2[] = "abc";



The following example shows the use of string:

/*String.c string variable*/
#include < stdio.h >
main()
{
char month[15];
printf ("Enter the string");
gets (month);
printf ("The string entered is %s", month);
}

Note:
Character string always terminated by a null character ‘\0’. A string variable is always declared as an array & is any valid C variable name. The general form of declaration of a string variable is




Reading Strings from the terminal:

The function scanf with %s format specification is needed to read the character string from the terminal itself. The following example shows how to read strings from the terminals:

#include < stdio.h >
main()
{
char month[15];
printf (“Enter the string”);
gets (month);
printf (“The string entered is %s”, month);
}



String operations (string.h)

language recognizes that strings are terminated by null character and is a different class of array by letting us input and output the array as a unit. To array out many of the string manipulations,C library supports a large number of string handling functions that can be used such as:

  1. Length (number of characters in the string).
  2. Concatentation (adding two are more strings)
  3. Comparing two strings.
  4. Substring (Extract substring from a given string)
  5. Copy(copies one string over another)



strlen() function:

This function counts and returns the number of characters in a particular string. The length always does not include a null character. The syntax of strlen() is as follows:

n=strlen(string);

Where n is the integer variable which receives the value of length of the string.




The following program shows to find the length of the string using strlen() function

/*writr a c program to find the length of the string using strlen() function*/
#include < stdio.h >
include < string.h >
void main()
{
char name[100];
int length;
printf("Enter the string");
gets(name);
length=strlen(name);
printf("\nNumber of characters in the string is=%d",length);
}
strcat() function:

when you combine two strings, you add the characters of one string to the end of the other string. This process is called as concatenation. The strcat() function is used to joins 2 strings together. It takes the following form:

strcat(string1,string2)

string1 & string2 are the character arrays. When the function strcat is executed string2 is appended to the string1. the string at string2 always remains unchanged.




strcmp function:

In c,you cannot directly compare the value of 2 strings in a condition like if(string1==string2) Most libraries however contain the function called strcmp(),which returns a zero if 2 strings are equal, or a non zero number if the strings are not the same. The syntax of strcmp() is given below:

Strcmp(string1,string2)



strcmpi() function

This function is same as strcmp() which compares 2 strings but not case sensitive.

Strcmp(string1,string2)



strcpy() function:

To assign the characters to a string,C does not allow you directly as in the statement name=Robert; Instead use the strcpy() function found in most compilers the syntax of the function is illustrated below.

strcpy(string1,string2);



strlwr () function:

This function converts all characters in a string from uppercase to lowercase

The syntax of the function strlwr is illustrated below

strlwr(string);



strrev() function:

This function reverses the characters in a particular string. The syntax of the function strrev is illustrated below
strrev(string);



The following program illustrate the use of string functions:

/* Example program to use string functions*/
#include < stdio.h >
#include < string.h >
void main()
{
char s1[20],s2[20],s3[20];
int x,l1,l2,l3;
printf("Enter the strings");
scanf("%s%s",s1,s2);
x=strcmp(s1,s2);
if(x!=0)
{printf("\nStrings are not equal\n");
strcat(s1,s2);
}
else
printf("\nStrings are equal");
strcpy(s3,s1);
l1=strlen(s1);
l2=strlen(s2);
l3=strlen(s3);
printf("\ns1=%s\t length=%d characters\n",s1,l1);
printf("\ns2=%s\t length=%d characters\n",s2,l2);
printf("\ns3=%s\t length=%d characters\n",s3,l3);
}


Be the first one to comment on this page.




  C Tutorial eBooks
More Links » »
 
 C Tutorial FAQs
More Links » »
 
 C Tutorial Interview Questions
More Links » »
 
 C Tutorial Articles
More Links » »
 
 C Tutorial News
More Links » »
 
 C Tutorial Jobs
More Links » »

Share And Enjoy:These icons link to social bookmarking sites where readers can share and discover new web pages.
  • blinkbits
  • BlinkList
  • blogmarks
  • co.mments
  • connotea
  • del.icio.us
  • De.lirio.us
  • digg
  • Fark
  • feedmelinks
  • Furl
  • LinkaGoGo
  • Ma.gnolia
  • NewsVine
  • Netvouz
  • RawSugar
  • Reddit
  • scuttle
  • Shadows
  • Simpy
  • Smarking
  • Spurl
  • TailRank
  • Wists
  • YahooMyWeb

Previoushome Next

Keywords: Strings in C, strings in c++, string in c, string functions in c, strcmp in c, integer to string in c, array of strings in c, int to string in c, string quartet in c sharp minor, string manipulation in c, string concatenation in c, string array in c, string quartet in c minor, string compare in c

HTML Quizzes
HTML Quiz
XHTML Quiz
CSS Quiz
TCP/IP Quiz
CSS 1.0 Quiz
CSS 2.0 Quiz
HLML Quiz
XML Quizzes
XML Quiz
XSL Quiz
XSLT Quiz
DTD Quiz
Schema Quiz
XForms Quiz
XSL-FO Quiz
XML DOM Quiz
XLink Quiz
XQuery Quiz
XPath Quiz
XPointer Quiz
RDF Quiz
SOAP Quiz
WSDL Quiz
RSS Quiz
WAP Quiz
Web Services Quiz
Browser Scripting Quizzes
JavaScript Quiz
VBScript Quiz
DHTML Quiz
HTML DOM Quiz
WMLScript Quiz
E4X Quiz
Server Scripting Quizzes
ASP Quiz
PERL Quiz
SQL Quiz
ADO Quiz
CVS Quiz
Python Quiz
Apple Script Quiz
PL/SQL Quiz
SQL Server Quiz
PHP Quiz
.NET (dotnet) Quizzes
Microsoft.Net Quiz
ASP.Net Quiz
.Net Mobile Quiz
C# : C Sharp Quiz
ADO.NET Quiz
VB.NET Quiz
VC++ Quiz
Multimedia Quizzes
SVG Quiz
Flash Quiz
Media Quiz
SMIL Quiz
Photoshop Quiz
Gimp Quiz
Matlab Quiz
Gnuplot Programming Quiz
GIF Animation Quiz
Scientific Visualization Quiz
Graphics Quiz
Web Building Quizzes
Web Browsers Quiz
Web Hosting Quiz
W3C Quiz
Web Building Quiz
Web Quality Quiz
Web Semantic Quiz
Web Careers Quiz
Weblogic Quiz
SEO Quiz
Web Site Hosting Quiz
Domain Name Quiz
Java Quizzes
Java Quiz
JSP Quiz
Servlets Quiz
Struts Quiz
EJB Quiz
JMS Quiz
JMX Quiz
Eclipse Quiz
J2ME Quiz
JBOSS Quiz
Programming Langauges Quizzes
C Quiz
C++ Quiz
Visual Basic Quiz
Data Structures Using C Quiz
Cobol Quiz
Assembly Language Quiz
Mainframe Quiz
Forth Programming Quiz
Lisp Programming Quiz
Pascal Quiz
Delphi Quiz
Fortran Quiz
OOPs Quiz
Data Warehousing Quiz
CGI Programming Quiz
Emacs Quiz
Gnome Quiz
ILU Quiz
Soft Skills Quizzes
Communication Skills Quiz
Time Management Quiz
Project Management Quiz
Team Work Quiz
Leadership Skills Quiz
Corporate Communication Quiz
Negotiation Skills Quiz
Database Quizzes
Oracle Quiz
MySQL Quiz
Operating System Quizzes
BSD Quiz
Symbian Quiz
Unix Quiz
Internet Quiz
IP-Masquerading Quiz
IPC Quiz
MIDI Quiz
Software Testing Quizzes
Testing Quiz
Firewalls Quiz
SAP Module Quizzes
ERP Quiz
ABAP Quiz
Business Warehousing Quiz
SAP Basis Quiz
Material Management Quiz
Sales & Distribution Quiz
Human Resource Quiz
Netweaver Quiz
Customer Relationship Management Quiz
Production and Planning Quiz
Networking Programming Quizzes
Corba Quiz
Networking Quiz
Microsoft Office Quizzes
Microsoft Word Quiz
Microsoft Outlook Quiz
Microsoft PowerPoint Quiz
Microsoft Publisher Quiz
Microsoft Excel Quiz
Microsoft Front Page Quiz
Microsoft InfoPath Quiz
Microsoft Access Quiz
Accounting Quizzes
Financial Accounting Quiz
Managerial Accounting Quiz
Testimonials | Contact Us | Link to Us | Site Map
Copyright © 2008. Academic Tutorials.com. All rights reserved Privacy Policies | About Us
Our Portals : Academic Tutorials | Best eBooksworld | Beyond Stats | City Details | Interview Questions | Discussions World | Excellent Mobiles | Free Bangalore | Give Me The Code | Gog Logo | Indian Free Ads | Jobs Assist | New Interview Questions | One Stop FAQs | One Stop GATE | One Stop GRE | One Stop IAS | One Stop MBA | One Stop SAP | One Stop Testing | Webhosting in India | Dedicated Server in India | Sirf Dosti | Source Codes World | Tasty Food | Tech Archive | Testing Interview Questions | Tests World | The Galz | Top Masala | Vyom | Vyom eBooks | Vyom International | Vyom Links | Vyoms | Vyom World
Copyright © 2003-2014 Vyom Technosoft Pvt. Ltd., All Rights Reserved.