C language mai String kya hota hai , string ki paribhasa?

 Hey guys welcome back to another video by simply learn in today's video we're gonna be learning all about strings in c but before we begin if you haven't subscribed to our channel already make sure to hit the subscribe button and the bell icon to never miss an update so now without any further delay let's begin this session will help you to understand what a string in c is .

 Next string declaration and initialization and finally let's understand string operations and the important functions of reading and writing a string let's get started with what is a string in c a string is a sequence of characters represented within double quotes string examples are as given below every time we initialize a string it must be within double quotes so for .

  Type character for example we have cad as data type string name as str it can be any name and followed by the size of a string if the string size is 5 the last character would be a null character represented as a terminating character in the c programming language now that we know how to declare a string in c moving ahead let us understand string initialization first let's see the ways to initialize .

 String we can initialize a string within double quotes by mentioning the string size and another way is that it can be initialized without mentioning a string size in the subscript and it can also be initialized inside the curly bracket character by character separated with the comma operator just by initializing character by character the compiler will identify the number of characters in a string then it .

 Will store character in the memory and the terminating character the null character look at the diagram below and understand how a string is stored in memory first memories are located at some address that holds the string a b c d and null character at the end and then the index starts from 0 to n minus 1 so in this example the string elements are 5 and the index will start .

 From 0 to 4. i hope it's clear okay so let us move on to the operations on strings we all know that we have many c programming language operations similarly we can perform different operations on string and a few such operations are finding the length of the string concatenating two strings copying a string to another string and finally comparing two strings .

 So for all these operations we have functions associated with it we use string handling functions defined in the header file string dot heads to perform such operations in c language a function like strlen is to find the length of a string it will count the number of characters in a string and prints the output then strc80 is used to concat two strings which means adding up two strings .

 Suppose our first string is simply and the second string is learn then it will add both the strings and give us the output as a single string called simply learn the following function is strcpy to copy a string to another and finally strcmp to compare two strings now that we have some idea about the strings handling functions in c language let's look at the functions to read and write a string .

 First let's understand the functions of reading a string using scanf getcat and gets we can take string input scanf is used to read string and percentage s is the format specification so when we use percentage s format specification to read a string from the terminal then ampersand is not required next the get cap function reads a single character by character from the terminal .

 Once the whole string is read it is stored as an array in the memory following we have the gets function defined in the stdio.h header file that reads character until it finds the new line character and add a null character to the string up next we have functions of writing a string and the functions are printf putcad and puts printed function is used to print the .

 String on the console we use the percentage as format specification to print the string on the console next bootcamp is used to print a single character so using a look we can use putcad repeatedly in our programs and print all the string characters finally we have puts function from which the whole string is printed which is defined in the header file stdio.hedge .

 Let's run a simple program to understand strings in a better way choose from over 300 in-demand skills and get access to 1 000 plus hours of video content for free visit scale up by simply learn click on the link in the description to know more as you all can see the program we are trying to print the string called simply learn using printf function so let's give string size less than a string .

 So let's give 5 and see the output so here we got an warning saying that string for array of care is too long that means it just prints the starting five characters of a string s-i-m-p-l so this is the starting five characters of a string called simply learn now let's remove the size and run the program , So as you can see the whole string is printed that means the compiler will identify the number of characters in a string and prints the output in our next program let's perform an operation using the string functions so in this program we are using puts and printf function to print the output then we have initialized two strings and the first string is simply and second string is learn in order to add both the strings we are using string function .

 Now let's run the program and look at the output as you can see strings are concatenated successfully so this was our first string called simply and second string learn and both the strings are added up and given a single string called simply learn so with this we have come to the end of this session on the string sensing i hope this session was informative and interesting until next time thank you .