What does % do in c language? and i want to print "%" as output?

Question

What does % do in c language? and i want to print "%" as output?

Answer 1

Wow, 10 incorrect solutions, in uncomplicated terms roger is right. To reiterate, the line "a = a++;" is an errors in C, reminiscent of having access to an array out of bounds or dereferencing a null pointer. something in any respect can happen if this defective fact is given to a C compiler. each compiler that shall we this collect deals with this in its own way, and there is no thank you to foretell what that is going to do. In prepare, compilers will the two print 2 or 3, yet diverse variations of the comparable compiler (see gcc under) would print distinctive issues. right here's some tries: OS: Linux GNU gcc 4.6.2 prints 3 Clang 3.0 prints 2 Intel 11.a million prints 3 OS: Solaris GNU gcc 3.4.6 prints 2 SunPro C 5.8 prints 3 SunPro C++ 5.8 prints 2 OS: domicile windows seen Studio 2010 C++ prints 3

Answer 2

If you want to print %, use %%. For example:



int perc;



perc = 25;



printf("The mark is: %d%%", perc);



Will print The mark is 25%

Answer 3

Friend,

you can do this. In printf statement use "\%" to display the % symbol .



% is used for printing in a formatted way.

%d for integers.

%s for string.

%f for float. etc

Answer 4

% is an operator in C. I printf, escape character for % is another %.



In both printf and scanf family of functions, it is a marker for format specifications.



In short, it is an overloaded operator. But the programmer is kept blissfully unaware of it until they look closer ;)

Answer 5

% is the modulus operator.

Used on integer values only.

eg. 10 % 3 = 1.

If you want to write "%" to screen, use printf("\"%%\"")

Answer 6

for printing "%" use \% char on console (computer screen)



printf function

int printf ( const char * format, ... );



Print formatted data to stdout



Writes to the standard output (stdout) a sequence of data formatted as the format argument specifies. After the format parameter, the function expects at least as many additional arguments as specified in format.





Parameters

format

String that contains the text to be written to stdout.

It can optionally contain embedded format tags that are substituted by the values specified in subsequent argument(s) and formatted as requested.

The number of arguments following the format parameters should at least be as much as the number of format tags.

The format tags follow this prototype:



%[flags][width][.precision][length]specifier

Where specifier is the most significant one and defines the type and the interpretation of the value of the coresponding argument:

specifier Output Example

c Character a

d or i Signed decimal integer 392

e Scientific notation (mantise/exponent) using e character 3.9265e+2

E Scientific notation (mantise/exponent) using E character 3.9265E+2

f Decimal floating point 392.65

g Use the shorter of %e or %f 392.65

G Use the shorter of %E or %f 392.65

o Signed octal 610

s String of characters sample

u Unsigned decimal integer 7235

x Unsigned hexadecimal integer 7fa

X Unsigned hexadecimal integer (capital letters) 7FA

p Pointer address B800:0000

n Nothing printed. The argument must be a pointer to a signed int, where the number of characters written so far is stored.

% A % followed by another % character will write % to stdout.



The tag can also contain flags, width, .precision and modifiers sub-specifiers, which are optional and follow these specifications:



flags description

- Left-justify within the given field width; Right justification is the default (see width sub-specifier).

+ Forces to preceed the result with a plus or minus sign (+ or -) even for positive numbers. By default, only negative numbers are preceded with a - sign.

(space) If no sign is going to be written, a blank space is inserted before the value.

# Used with o, x or X specifiers the value is preceeded with 0, 0x or 0X respectively for values different than zero.

Used with e, E and f, it forces the written output to contain a decimal point even if no digits would follow. By default, if no digits follow, no decimal point is written.

Used with g or G the result is the same as with e or E but trailing zeros are not removed.

0 Left-pads the number with zeroes (0) instead of spaces, where padding is specified (see width sub-specifier).





width description

(number) Minimum number of characters to be printed. If the value to be printed is shorter than this number, the result is padded with blank spaces. The value is not truncated even if the result is larger.

* The width is not specified in the format string, but as an additional integer value argument preceding the argument thas has to be formatted.



.precision description

.number For integer specifiers (d, i, o, u, x, X): precision specifies the minimum number of digits to be written. If the value to be written is shorter than this number, the result is padded with leading zeros. The value is not truncated even if the result is longer. A precision of 0 means that no character is written for the value 0.

For e, E and f specifiers: this is the number of digits to be printed after the decimal point.

For g and G specifiers: This is the maximum number of significant digits to be printed.

For s: this is the maximum number of characters to be printed. By default all characters are printed until the ending null character is encountered.

For c type: it has no effect.

When no precision is specified, the default is 1. If the period is specified without an explicit value for precision, 0 is assumed.



.* The precision is not specified in the format string, but as an additional integer value argument preceding the argument thas has to be formatted.





length description

h The argument is interpreted as a short int or unsigned short int (only applies to integer specifiers: i, d, o, u, x and X).

l The argument is interpreted as a long int or unsigned long int for integer specifiers (i, d, o, u, x and X), and as a wide character or wide character string for specifiers c and s.

L The argument is interpreted as a long double (only applies to floating point specifiers: e, E, f, g and G).







additional arguments

Depending on the format string, the function may expect a sequence of additional arguments, each containing one value to be inserted instead of each %-tag specified in the format parameter, if any. There should be the same number of these arguments as the number of %-tags that expect a value.



Return Value

On success, the total number of characters written is returned.

On failure, a negative number is returned.



Example

/* fprintf example */

#include



int main()

{

printf ("Characters: %c %c \n", 'a', 65);

printf ("Decimals: %d %ld\n", 1977, 650000);

printf ("Preceding with blanks: %10d \n", 1977);

printf ("Preceding with zeros: %010d \n", 1977);

printf ("Some different radixes: %d %x %o %#x %#o \n", 100, 100, 100, 100, 100);

printf ("floats: %4.2f %+.0e %E \n", 3.1416, 3.1416, 3.1416);

printf ("Width trick: %*d \n", 5, 10);

printf ("%s \n", "A string");

return 0;

}





And here is the output:





Characters: a A

Decimals: 1977 650000

Preceding with blanks: 1977

Preceding with zeros: 0000001977

Some different radixes: 100 64 144 0x64 0144

floats: 3.14 +3e+000 3.141600E+000

Width trick: 10

A string







and in last use \% to print % char on console (computer screen) and in last dont forget to rank my answer

Answer 7

In the context of the printf (and scanf) family of functions, the % sign allows you to specify formatting for printing (or reading, in the case of scanf). For example, %d prints decimal when passed an int, and %s prints a null-terminated string when passed a char*.



To actually print a % sign, double it: %%. For example:



printf("Progress: %d%% complete\n", progress);



Hope this helps!

Answer 8

% is used with format specifier in C-language with input and ooutput statement. It is also used as Modulus operator(to find reaminder by division).



if you wnat to print % you ahve to use it as

printf("%c", '%');