string functions in c - Brave Search

What are the most commonly used & useful string functions in C?

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printf and it's variants are among the most used and useful string functions that I use. If we're counting other functions in string.h I'd definitely add memset and memcpy. Answer from FUPA_MASTER_ on reddit.com

tutorjoes.in › c_programming_tutorial › string_function_in_c

String Manipulation in C : A Comprehensive Guide

strcpy ( destination , source ) => String copies the contents of source string to destination string. ... #include<stdio.h> #include<string.h> int main() { char c[20],a[20]; char x[10]={'R','A','M','\0'}; char y[10]={'K','U','M','A','R','\0'}; printf("x : %s",x); printf("\nEnter The String ...

geeksforgeeks.org › c language › string-functions-in-c

C String Functions - GeeksforGeeks

July 26, 2025 - C language provides various built-in functions that can be used for various operations and manipulations on strings. These string functions make it easier to perform tasks such as string copy, concatenation, comparison, length, etc.

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What are the most commonly used & useful string functions in C?

printf and it's variants are among the most used and useful string functions that I use. If we're counting other functions in string.h I'd definitely add memset and memcpy. More on reddit.com

r/C_Programming

54

55

May 4, 2024

string functions

Is there somewhere that documents all of the available string functions for the Arduino? I have tried searching the Forum as well as the Arduino Reference and cannot locate anything. More on forum.arduino.cc

forum.arduino.cc

0

April 7, 2021

String manipulation in C

Hi OP. There may be varying opinions here, but I'd prefer, if I were using your library, that you didn't allocate memory in you library functions. Require the caller to allocate memory and pass the buffer (and size) to your functions. There is only one c string function, I can think of, that allocates: strdup(). Most requires passing in preallocated buffer. If you 'are' going to allocate, you need to scream it in your documentation/readme so that users know they need to free() the result. More on reddit.com

r/C_Programming

6

2

July 6, 2019

Proper way to return a String from a function?

There are 3 possible ways I have, in decreasing order of preference: Pass a pointer to a string buffer and a length as parameters to your function, use those to return your string (using strncpy to make sure you don't overflow your buffer). Allocate the returned string using malloc and have the caller be responsible for freeing it. Return a pointer to a static buffer. This is the least preferred option as it is not thread-safe. More on reddit.com

r/C_Programming

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June 5, 2015

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C string functions

C-string functions: strlen, strcpy, strcat, strncpy, strncat, strcmp, ...

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String Functions in C Programming | C Tutorial | Amit Thinks - YouTube

C++ Tutorial: How to write your own C-string handling functions ...

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programiz.com › c-programming › c-strings

Strings in C (With Examples)

It's because gets() allows you to input any length of characters. Hence, there might be a buffer overflow. Strings can be passed to a function in a similar way as arrays.

dyclassroom.com › c › c-functions-and-strings

C - Functions and Strings - C Programming - dyclassroom | Have fun learning :-)

In this tutorial we will learn how to pass and use strings in functions in C programming language.

w3schools.com › c › c_strings_functions.php

C String Functions

Note that the size of str1 should be large enough to store the result of the two strings combined (20 in our example). To copy the value of one string to another, you can use the strcpy() function:

ccbp.in › blog › articles › string-functions-in-c

Complete Guide on String Functions in C

December 12, 2025 - Master the skill to properly declare, ...‍‌students. Master 12 essential String Functions in C, like strlen, strcpy, strcmp, strcat, strncpy, strstr, memcpy, and more, including syntax, parameters, and output....

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w3schools.com › c › c_ref_string.php

C string (string.h) Library Reference

C Examples C Real-Life Examples C Exercises C Quiz C Code Challenges C Compiler C Syllabus C Study Plan C Interview Q&A C Certificate ... The <string.h> library has many functions that allow you to perform tasks on strings.

reddit.com › r/c_programming › what are the most commonly used & useful string functions in c?

r/C_Programming on Reddit: What are the most commonly used & useful string functions in C?

May 4, 2024 -

As there are a lot of string manipulation functions, what are note-worthy?

printf and it's variants are among the most used and useful string functions that I use. If we're counting other functions in string.h I'd definitely add memset and memcpy.

noteworthy I'd say noteworthy doesn't necessarily equate to useful. I think it's better to know what not to use, and then pick from the rest as needed. strtok is a really bad API. If you need to tokenize a string, making your own function is pretty much always better than using strtok. ato* functions are essentially always worse than just using strto* variants. The strcpy and strcat families are finicky. Ideally you should just implement one of the popular variants, like strscpy, and use that. If you want to include IO functions as "string functions', then there's a couple obvious pitfalls. gets, while removed from the standard, is worth knowing about purely for how awful it was. scanf is not meant for arbitrary input; many books use it for brevity, but it's harder to use correctly compared to manually parsing a string from fgets.

educba.com › home › software development › software development tutorials › c programming tutorial › c string functions

Mastering C String Functions: Efficient String Manipulation in C

September 4, 2023 - Explore essential C string functions, including strlen, strcpy, strcat, and more, for efficient text manipulation in C programming.

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C | String Functions | C Programming - C Tutorial - Wikitechy

It concatenates source string at the end of destination string. char * strcat ( char * destination, const char * source ); In C-Programming the strncat() function is used for concatenating ( appending ) portion of one string at the end of another string.

prepbytes.com › home › c programming › string functions in c

String Functions in C

April 24, 2023 - String functions in C are built-in functions that provide a convenient way to manipulate and process character arrays (strings).

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String Functions in C: Comprehensive Guide and Examples - Studocu

December 8, 2025 - This document provides a comprehensive overview of string handling in C programming, detailing the nature of strings as character arrays and the essential string functions available in the C standard library.

forum.arduino.cc › projects › programming

string functions - Programming - Arduino Forum

April 7, 2021 - Is there somewhere that documents all of the available string functions for the Arduino? I have tried searching the Forum as well as the Arduino Reference and cannot locate anything.

geeksforgeeks.org › c++ › cpp-string-functions

String Functions in C++ - GeeksforGeeks

July 23, 2025 - We can find the length of the string (number of characters) using either length() or size() function of the std::string class. ... This function does not take any parameter. ... This function returns the number of characters in the string object.

The Valley of Code

thevalleyofcode.com › lesson › c-advanced › return-string

C Advanced: Returning strings

Note the use of const, because from the function I’m returning a string literal, a string defined in double quotes, which is a constant.

scribd.com › document › 474893244 › C-String-function

C String Function | PDF | String (Computer Science) | Computer Programming

The document discusses various string handling functions in C including: - strlen to get the length of a string - strcpy to copy one string to another - strcat to concatenate two strings - strcmp to compare two strings - Functions to convert ...

w3schools.com › cpp › cpp_strings_cstyle.asp

C++ C-Style Strings

As C++ was developed as an extension of C, it continued to support this way of creating strings in C++: string greeting1 = "Hello"; // Regular String char greeting2[] = "Hello"; // C-Style String (an array of characters) Try it Yourself » · Note: It is more convenient to work with the standard string type, rather than C-style strings. However, one reason some users continue to use C-style strings is that they have access to functions from the C standard library.

docs.python.org › 3 › library › string.html

string — Common string operations

Implement checking for unused arguments if desired. The arguments to this function is the set of all argument keys that were actually referred to in the format string (integers for positional arguments, and strings for named arguments), and a reference to the args and kwargs that was passed to vformat.

reddit.com › r/c_programming › string manipulation in c

r/C_Programming on Reddit: String manipulation in C

July 6, 2019 -

Hi guys!

I know y'all probably already have your own functions written for this kind of stuff or already have your favorite lib, but if you do not or if you do not mind given your thoughts and opinions, please, check my project out. It's a library / header with some functions for manipulating strings inspired in the Oracle PL/SQL functions. Functions the lib already have:

char *replace(char *string, char *oldChar, char *newChar);

char *rpad(char *string, char *padString, int paddedLength);

char *substr(char *string, int ini, int end);

int indexOf(char *string, char *keyword, int *start, int *end);

This is totally an amateur project, made to study, never used in production.

I saw some big libraries with some functions like this, but they work with structs instead of array of characters. I think they have their reasons, but I wanted something simple so I made this. The fact that I use int and char* probably will result in compatibility issues, but I do not quite understand this yet so I'll leave it at it.

Anyway, this is the link for the source code: https://github.com/crocarneiro/libstring-utils

You can download the source and compile it yourself or if you prefer you can install the lib in your linux system and then just link the library in your projects with the flag -lstring-utils.

I appreciate any opinion you can give me. That's all folks.

Hi OP. There may be varying opinions here, but I'd prefer, if I were using your library, that you didn't allocate memory in you library functions. Require the caller to allocate memory and pass the buffer (and size) to your functions. There is only one c string function, I can think of, that allocates: strdup(). Most requires passing in preallocated buffer. If you 'are' going to allocate, you need to scream it in your documentation/readme so that users know they need to free() the result.

If replace replaces individual characters it's better to use the regular char type