MathWorks
mathworks.com › matlab › language fundamentals › data types › characters and strings
sprintf - Format data into string or character vector - MATLAB
Input text without formatting operators, specified as a character vector or string scalar. sprintf translates any escape-character sequences in literalText.
TutorialsPoint
tutorialspoint.com › c_standard_library › c_function_sprintf.htm
C Library - sprintf() function
The C Library sprintf() function allows you to create strings with specified formats, similar to printf(), but instead of printing to the standard output, it stores the resulting string in a character array provided by the user.
Videos
01:39
Manage C strings with sprintf - YouTube
sprintf() Function | C Programming Tutorial
06:01
Systems Programming: sprintf and sscanf - YouTube
MATLAB: String Functions - sprintf (9 of 9)
07:54
sprintf Function (Example) | Return Percent, Leading Blanks, or ...
14:08
So many printf varieties (sprintf, fprintf, vprintf, ...) - YouTube
RDocumentation
rdocumentation.org › packages › base › versions › 3.6.2 › topics › sprintf
sprintf function - RDocumentation
A wrapper for the C function sprintf, that returns a character vector containing a formatted combination of text and variable values.
PHP
php.net › manual › en › function.sprintf.php
PHP: sprintf - Manual
<?php $num = 5; $location = 'tree'; $format = 'There are %d monkeys in the %s'; echo sprintf($format, $num, $location); ?>
Perl Documentation
perldoc.perl.org › functions › sprintf
sprintf - Perldoc Browser
Returns a string formatted by the usual printf conventions of the C library function sprintf.
Campbell Scientific
help.campbellsci.com › crbasic › cr6 › Content › Instructions › sprintf.htm
Sprintf (String Print Formatted)
Sprintf is used to format an output string and store it in a destination variable. It allows you to create well-structured strings by specifying format specifiers for different data types, such as integers, floating-point numbers, and hexadecimal values. For example, you can use Sprintf to ...
W3Schools
w3schools.com › php › func_string_sprintf.asp
PHP sprintf() Function
The sprintf() function writes a formatted string to a variable.
GeeksforGeeks
geeksforgeeks.org › c language › sprintf-in-c
sprintf() in C - GeeksforGeeks
January 10, 2025 - sprintf stands for “String print”. Instead of printing on console, it store output on char buffer which are specified in sprintf.
Sternum IoT
sternumiot.com › home › sprintf and snprintf c functions – syntax, examples, and security best practices
sprintf and snprintf C Functions | Syntax, Examples & Security Best Practices| Sternum IoT
June 4, 2023 - What ןs the sprintf() Function In C programming language the sprintf() function is used for formatting strings through the merger of text with variables, numbers, etc. The sprintf() function accepts a format string as its initial argument, ...
CS50
manual.cs50.io › 3 › sprintf
sprintf - CS50 Manual Pages
The functions in the printf() family produce output according to a format as described below. The functions printf() and vprintf() write output to stdout, the standard output stream; fprintf() and vfprintf() write output to the given output stream; sprintf(), snprintf(), vsprintf(), and vsnprintf() write to the character string str.
Cycling '74
docs.cycling74.com › max5 › refpages › max-ref › sprintf.html
sprintf Reference
The sprintf object allows you to use the famous C-language "printf" function inside Max. You can combine symbols, organize lists of numbers, or format messages or menu items.
cppreference.com
en.cppreference.com › c › io › fprintf
printf, fprintf, sprintf, snprintf, printf_s, fprintf_s, sprintf_s, snprintf_s - cppreference.com
sprintf(dst, "%s and %s", dst, t); // <- broken: undefined behavior
Milwaukee School of Engineering
faculty-web.msoe.edu › barnekow › includes › sprintf.pdf pdf
sprintf function int sprintf ( char * str, const char * format, ... ); <cstdio>
sprintf · function · int sprintf ( char * str, const char * format, ... ); <cstdio> Write formatted data to string · Writes into the array pointed by str a C string consisting on a sequence of data formatted as the · format argument specifies. After the format parameter, the function expects at least as many ·
Linux Man Pages
linux.die.net › man › 3 › sprintf
sprintf(3): formatted output conversion - Linux man page
The functions in the printf() family produce output according to a format as described below. The functions printf() and vprintf() write output to stdout, the standard output stream; fprintf() and vfprintf() write output to the given output stream; sprintf(), snprintf(), vsprintf() and vsnprintf() write to the character string str.
NCL
ncl.ucar.edu › Document › Functions › Built-in › sprintf.shtml
sprintf
function sprintf ( format [1] : string, array : float ; or double ) return_val [dimsizes(array)] : string
Microsoft Learn
learn.microsoft.com › en-us › cpp › c-runtime-library › reference › sprintf-sprintf-l-swprintf-swprintf-l-swprintf-l
sprintf, _sprintf_l, swprintf, _swprintf_l, __swprintf_l | Microsoft Learn
July 2, 2025 - The sprintf function formats and stores a series of characters and values in buffer. Each argument (if any) is converted and output according to the corresponding format specification in format.
Arduino Forum
forum.arduino.cc › projects › programming
Sprintf - conversion specifications (%n$) - Programming - Arduino Forum
February 1, 2022 - Dear, In the sprinf conversion specification %n$, n is an integer, e.g. $2$ n is 'hard coded' in the program. I want to use a variable instead to print a variable number of digit to a LCD. I tried to use string and c…
TechOnTheNet
techonthenet.com › c_language › standard_library_functions › stdio_h › sprintf.php
C Language: sprintf function (Formatted String Write)
In the C Programming Language, the sprintf function writes formatted output to an object pointed to by s.
Top answer 1 of 3
9
The value 6778986 gives 0x0067706A in hexadecimal, which correspond to the last 3 ASCII characters and the null terminator ("jpg") of what should have been in the picture string.
This indicates that you defined picture just before pic_num, and only 4 bytes large. I'm guessing you defined it as :
char picture[4];
You need to properly size the string to hold at least 8 characters (but potentially more depending on how large the pic_num value can get), so what gets written into it by sprintf doesn't overflow into pic_num. For example :
char picture[16];
For more info on what sprintf does, refer to this reference eg. : http://en.cppreference.com/w/c/io/fprintf
2 of 3
3
sprintf writes the results to a character string buffer. So it is like printf but instead of printing to stdout it stores result in a buffer
int sprintf( char* buffer, const char* format, ... );
The size of the buffer should be large enough to contain the entire resulting string which is characters + terminating null at the end. You can use a snprintf as a safer version.
You have got 6778986 because this resulted from taking pASCII values of characters "jpg" (with terminating '\0'), the `0x0067706A'
'\0' 'g' 'p' 'j'
0x00 67 70 6A
what tells us that most probably your picture is incorrectly declared as
char picture[4];
and thus has not enough space for 8 characters string "%03d.jpg" (+ '\0').
You should declare buffer as
char picture[8]; // space for at least 7 characters + '\0'
Oracle
docs.oracle.com › cd › E88353_01 › html › E37843 › sprintf-3c.html
sprintf - man pages section 3: Basic Library Functions
The sprintf() function places output, followed by the null byte (\0), in consecutive bytes starting at s; it is the user's responsibility to ensure that enough storage is available.