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Jun 22, 2023 · For example, If we want to read and print an integer using scanf() and printf() functions, either %i or %d is used but there is a subtle difference in both %i and %d format specifier. %d specifies signed decimal integer while %i specifies integer of various bases.
Dec 12, 2009 · d Matches an optionally signed decimal integer, whose format is the same as expected for the subject sequence of the strtol function with the value 10 for the base argument. The corresponding argument shall be a pointer to signed integer.
Jan 6, 2020 · In C programming language, %d and %i are format specifiers as where %d specifies the type of variable as decimal and %i specifies the type as integer.
Oct 6, 2023 · Difference between %d and %i format specifier in C language A format specifier is a special character or sequence of characters used to define the type of data to be printed on the screen or the type of data to be scanned from standard input.
%d takes integer value as signed decimal integer i.e. it takes negative values along with positive values but values should be decimal. %i as input specifier. %i takes integer value as integer value with decimal, hexadecimal or octal type.
%d is used for signed decimal integers and %i is used for integers. Using %d, we can read or print positive or negative decimal values. Using %i, we can read or print integer values in decimal, hexadecimal or octal type. The hexadecimal value should starts with 0x and the octal value should starts with 0. Example:
Jul 6, 2017 · There is no difference between %d and %i, and as far as I can tell, %D isn't a thing (or at least, maybe it's a compiler-specific extension). See http://en.cppreference.com/w/c/io/fprintf, or section 7.19.6.1 of the e.g. the C99 standard.
Mar 13, 2023 · What is the difference between the %i and %d format specifiers in C? In C, the %i and %d format specifiers are used to format integer values. The main difference between the two is that %i supports input in octal and hexadecimal notation, whereas %d does not.
To summarize, the main difference between %d and %i is that %d is used for printing signed decimal integers, while %i can be used for printing signed integers in decimal, octal, or hexadecimal format.
I would prefer %d over %i for this reason. A number that is printed with %d can be read in with %d and you will get the same number. That is not always true with %i, if you ever choose to use zero padding. Because it is common to copy printf format strings into scanf format strings, I would avoid %i, since it could give you a surprising bug ...
