Strings

1. List of Strings
• Real-Time applications often require storage and
manipulation of a number of strings (i.e. List of strings)
and not only a single string.
• A list of strings can be stored on two ways:
1. Using an array of strings
2. Using an array of character pointer
Array of Strings:
• If an application requires the storage of multiple strings,
an array of strings can be used to store them.
• The list of strings can be stored by creating an array of one
dimensional character arrays (i.e. Two-dimensional
character array)

2. Declaration of Array of strings
Syntax:
Char String_name[Row_size][column_size]={ values};
• Array of strings declaration consists of char type specifier,
an identifier name, row size specifier and column size
specifier.
char str1[2][30];  Str1 can store 2 strings of
maximum 30 characters each
char str2[5][10];  str2 can store 5 strings of
maximum 10 characters each

3. Declaration of Array of strings
• Initialization of array of strings: Array of strings can be
initialized in two ways:
a. Using String literal constants:
b. Using a list of character initializers:

4. Array of Character Pointers
• An array of strings can also be stored by using an array of
character pointers.
• The starting addresses of strings are stored in an array of
character pointers.

5. Command Line Arguments
• The inputs are given at the command line or command prompt
are known Command Line Arguments.
• To retrieve the command line arguments, the function main
should be defined as:
main(int argc, char *argv[])
{
……. // Body of main function
…….
}
• In the header of the main function, two parameters are given,
namely:
• argc Argument Count and is of integer type
• argv Argument Value ia an array of character pointers.