Format specifiers

The format specifiers are used in C for input and output purposes. By using this compiler can easily understand that what type of data is in a variable during taking input using the scanf() function and printing using printf() function.

List:

Format Specifier	Type
%c	Character
%d	Signed integer
%e or %E	Scientific notation of floats
%f	Float values
%g or %G	Similar as %e or %E
%hi	Signed integer (short)
%hu	Unsigned Integer (short)
%i	Unsigned integer
%l or %ld or %li	Long
%lf	Double
%Lf	Long double
%lu	Unsigned int or unsigned long
%lli or %lld	Long long
%llu	Unsigned long long
%o	Octal representation
%p	Pointer
%s	String
%u	Unsigned int
%x or %X	Hexadecimal representation
%n	Prints nothing
%%	Prints % character

 Example:

#include <stdio.h> 
int main() 
{ 
   char ch = 'S'; 
   int no_1 = 25, no_2 = 70; 
   float no_3 = 12.67; 
   int no_4 = 67;
   printf("%c\n", ch);              //printing character data
   printf("%d\n", no_1);         //print decimal
   printf("%i\n", no_2);         //print integer data
   printf("%f\n", no_3);         //print float value 
   printf("%e\n", no_3);         //print in scientific notation
   printf("%o\n", no_4);         //print in octal format
   printf("%x\n", no_4);         //print in hex format
   return 0;
}

Output: