The C strrev function is a String Function, used to reverse the given string. String function are the functions that are used to perform operations on a string. This is bad and you should never do this. generate link and share the link here. }. Before we get into the C# string function, let me show you the available properties. it is only used to display the strings whereas the printf() is used to display all kinds of outputs to stdout. Some of the functions are : strlen(), strcpy(), strupr(), strlwr(), strrev(), strcmp(), strcmpi(), strcat(), strncpy(), memset(). Enter the string: Welcome. Please use ide.geeksforgeeks.org, Test Data : Input the string : Welcome, w3resource . This function is used to compare the two strings and return 0 if both the strings are equal. strcpy(str3, str1); Also, we need to add the ‘\0’ afterward. gets(name); Read also, We already know the string is a reference type. char str1[10],str2[10]; Commonly used String functions in C/C++ with Examples. C strlen () The strlen () function calculates the length of a given string. #include In the c# there are a lot of predefine string functions are available. In c#, Method is a separate code block and that contains a series of statements to perform particular operations and methods must be declared either in class or struct by specifying the required parameters. 1. After concatenation, the string will be: Welcome to our site. gets(str2); This can be simplified further by using a library function which takes direct string inputs and adds a ‘\0’ at the end of the string input. This is another string function popularly used in C language. One use of having functions is to simplify the code by breaking it into smaller units called functions. C program to find length of a string, for example, the length of the string "C programming" is 13 (space character is counted). printf("String is: %s",str); sizeof(str1) Below program explains different usages of this library function: Return: This function returns the length of string passed. They are as follows: Input Functions; Capacity Functions; Iterator Functions; manipulating Functions; And these functions of strings are again divided into sub-categories. String Functions in C++: There is a different type of functions on strings. e.g- You'll learn to get string from the user and perform operations on the string. #include PHP String Functions. As the name suggests, this function is used to return the characters of the string in the lower case. char str1[12] = "Hello"; printf("String after |%c| is - |%s|\n", ch, ret); The strtok function returns a pointer to the first character of a token or a null pointer if there is no token. We just have to write one function and then call it as and when necessary without having to write the same … In the above prototype, function srtcmp takes two strings as parameters and returns an integer value based on the comparison of strings. printf("\nUpper String is: %s",strupr(str)); … { The output for the above code snippet would be: There are many pre-built library functions in C programming language and it also provides you the option of creating your own custom function. C++ treats a strings as a null-terminated array of characters. printf("String is: %s",str); Basically for all system-related communication as it is a low-level system friendly programming language. Return type: int. The character functions use ctype.h as their header file. ALL RIGHTS RESERVED. "and are compiled to an array of the specified char values with an additional null terminating character (0-valued) code to mark the end of the string. For example, Hello + javaTpoint = Hello javaTpoint. Function in C programming is a reusable block of code that makes a program easier to understand, test and can be easily modified without changing the calling program. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. Strlen() displays the length of any string. e.g- int main () { This process will be continued until a character in either string is NULL or the characters are unequal. char *ret; All the string functions are given below. #include This function is used to return the reversal of the string provided. CONCAT: CONCAT(‘A’,’BC’) ‘ABC’ Concatenate two strings and return the combined string. Below programs illustrate the strlen() function in C: This function appends not more than n characters from the string pointed to by src to the end of the string pointed to by dest plus a terminating Null-character. Us from writing the same code again and again of declaring and initializing PHP! 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