What is the difference between char array and string literal?
There are two main differences between char array and literal.
We need to add the null  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing '\0' at the end of the array by ourself whereas, it is  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing internally by the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing in the case of the character array.
The string literal cannot be reassigned to another set of  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing whereas, we can  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing the characters of the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing.

Describe Traversing String?
Traversing the string is one of the most important  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing in any of the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing languages. We may need to manipulate a very large text which can be done by traversing the text.  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing string is somewhat  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing from the traversing an integer  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing. We need to know the length of the array to traverse an  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing array, whereas we may use the null  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing in the case of  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing to identify the end the string and  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing the loop.
Hence, there are two ways to  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing a string.
By using the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing of string
By using the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing character.

Describe gets() function?
he gets()  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing enables the user to enter some  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing followed by the enter key. All the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing entered by the user get stored in a  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing array. The null character is added to the array to make it a  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing. The gets() allows the user to enter the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing-separated strings. It  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing the string entered by the user.

Describe puts() functions?
The puts() function is very much similar to  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing() function. The puts() function is used to print the string on the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing which is previously read by using gets() or scanf() function. The  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing()  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing returns an integer value  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing the number of  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing being printed on the console. Since, it prints an additional newline  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing with the string, which moves the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing to the new line on the console, the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing value returned by puts() will always be equal to the number of  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing present in the string plus 1.

What are the different String functions?
1)strlen(string_name) -  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing the length of  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing name.
2) appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing(destination, source) - copies the  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing of source string to  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing string.
3) appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing(first_string, second_string) - concats or joins first string with  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing string. The result of the string is  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing in first string.
4) appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing(first_string, second_string)- compares the first  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing with second string. If both strings are same, it  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing 0.
5) appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing(string)- returns reverse string.
6)strlwr(string)- returns string characters in  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing.
7) appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing(string)-  appendedarrayaspectscharactercharacterscompilerconsolecontentscursordestinationdifferentfunctionintegerlengthlowercasenullprintfprogrammingputsreassignrepresentingreturnssecondspacestoredstrcatstrcmpstrcpystringstrrevstruprterminatetraverseTraversing string characters in uppercase.