String Introduction

Group of characters can be stored in a character array. String in C language is an array of characters that is terminated by \0 (null character)

Declaration :

There are two ways to declare string in c language.

• By char array
• By string literal

string by char array

Syntax :

char ch[]={'h','e','l','l','o','\0'};

Note :

• Declaring string size is not mandatory.

string by string literal

Syntax :

char ch[]="hello";

Note :

• ‘\0’ is not necessary. C inserts the null character automatically.


Important Points :
• The '%s' is used to print string in c language.

Example of string :

        #include <stdio.h>

        int main(void)
        {
        char ch[11] = {'h', 'e', 'l', 'l', 'o', '\0'};
        char ch2[11] = "hello";
        char c = 'h';

        printf("Character value is : %c\n",c);
        printf("\nChar Array Value is : %s\n", ch);
        printf("\nString Literal Value is : %s\n", ch2);

        return 0;
        }

    

Output :

Character value is : h
Char Array Value is : hello
String Literal Value is : hello
    

Example of gets and puts function :

    #include <stdio.h>

    int main(void)
    {
    char name[25] ;

    printf ( "Enter name : " ) ;
    gets ( name ) ;//for input

    printf("\nYour Name is : ");
    puts ( name ) ;//for output

    return 0;
    }

Output :

Enter name : hello
Your Name is : hello