C Strings
What are Strings in C?
A string in C is a collection of characters stored in a character array and terminated by a null character (‘\0’).
Strings are used to store words, names, sentences, and other text data.
In C Programming, strings are declared using the char data type.
Example
char name[] = “SkillovaHub”;
Explanation
• name is the string variable.
• “SkillovaHub” is stored as a character array.
• The compiler automatically adds the null character (‘\0’) at the end of the string.
• Strings are always stored as arrays of characters.
Why Strings are Important?
Strings are important because they:
• Store text data such as names, addresses, and messages.
• Make it easy to display and manipulate text.
• Are widely used in user input and output operations.
• Help manage character data efficiently.
• Are essential for building real-world C applications.
Types of Strings in C
Strings in C can be created in different ways.
The most common types of string declarations are:
• String using Character Array
• String using Pointer
Both methods are widely used in C Programming depending on the application.
String using Character Array
A character array is the most common way to store strings in C.
Each character is stored in consecutive memory locations, and the string ends with a null character (‘\0’).
Example
char name[] = “SkillovaHub”;
Explanation
• name is a character array.
• “SkillovaHub” is stored as a sequence of characters.
• The compiler automatically adds the null character (‘\0’).
• Character arrays are easy to modify.
String using Pointer
A string can also be stored using a character pointer.
In this method, the pointer stores the address of a string literal.
String pointers are commonly used when the string does not need to be modified.
Example
char *name = “SkillovaHub”;
Explanation
• name is a character pointer.
• It points to the string literal “SkillovaHub”.
• The pointer stores the memory address of the string.
• String literals should not be modified using a character pointer.
Advantages of Strings
• Strings are used to store text data efficiently.
• They make programs easier to read and understand.
• Strings simplify input and output operations.
• They are widely used in real-world applications.
• Strings support many built-in library functions.
Example Program
Program
#include <stdio.h>
int main()
{
char name[] = “SkillovaHub”;
printf(“String = %s”, name);
return 0;
}
Output
String = SkillovaHub
Explanation
• char name[] declares a character array to store a string.
• “SkillovaHub” is assigned to the string variable name.
• %s is the format specifier used to display a string.
• printf() prints the complete string on the screen.
• return 0; terminates the program successfully.
Key Points
• A string is a collection of characters stored in a character array.
• Every string in C ends with a null character (‘\0’).
• Strings can be declared using a character array or a character pointer.
• The %s format specifier is used to display strings.
• Strings are widely used to store names, messages, and text data.
• String library functions simplify string manipulation.
• Strings are one of the most important data types in C Programming.