• On July 1, 2025
• By Karmehavannan
• 0 Comment
• Categories: function in C, Pre-define String function in C
• Tags: "String.h" header file in c language, C language, pre-defined function

String function in C programming Language

String function in C programming Language

String function in C programming language is used to perform related operations of strings, which are always enclosed by double quotes. The character is enclosed by single quotes in c similar to other languages.

In this tutorial, we will learn about every function in the C programming Language

strcat() – It is a Concatenates two string, Str2 can be concatenated at the end of the str1

strncat() – It is Appends a portion of String to another

strcpy() – It Copies String2 into String 1

strncpy() – It Copies the given number of characters of one String to another

strlen() – It gives the length of given String

strcmp() – It Returns 0 value if String 1 is same as String 2.

Returns < 0 ,if String 1

Returns >0 if String1>String2

strcmpi() – It is the same as strcmp() function but this function negotiates case “A” and “a” are treated as same

strchr() – It is a which returns the pointer to the first occurrence of char in String 1

strrchr() – the Last occurrence of a given character in a String is found

strstr() – It Returns a pointer to the first occurrence of String 2 in String 1

strrstr() -It Returns a pointer to the last occurrence of String 2 in String 1

strdup() – It is a function in C language which Duplicates the given String

strlwr() – It is a C language function which Converts string to lover case

strupr() – It Converts string to upper case

strrev() – It Reverses the given string

strset() – It Sets all characters in a string to given character

strnset() – It sets the portion of characters in a string to given character

strtok() – It is Tokenizing has given String using delimiter

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