printf functions 1

[airdevil]

I am used to c++ output, can anyone tell me how to
output a variable with the printf commands.

I got cprintf("Hello&quot to work.

char SQUARE = int(219);

cprintf(SQUARE); // doesnt not work,

What is the format for outputting variables??

Thanx

Korn
airdevil23@hotmail.com

"procrastination is the key to happiness"

 

[zBuilder]

printf and it's cousins can be confusing the first time you use them. Look up format specifiers under printf.
To print an integer variable do something like this:

int x = 3;
printf("x is equal to %d\n", x);

Using %x instead of %d will give you the hexadecimal value of x.
Below is a list of other types of output:

Type Char Expected Input Format of output

Numerics

d Integer Signed decimal integer
i Integer Signed decimal integer
o Integer Unsigned octal integer
u Integer Unsigned decimal integer
x Integer Unsigned hexadecimal int (with a, b, c, d, e, f)
X Integer Unsigned hexadecimal int (with A, B, C, D, E, F)
f Floating point Signed value of the form [-]dddd.dddd.
e Floating point Signed value of the form [-]d.dddd or e[+/-]ddd
g Floating point Signed value in either e or f form, based on given value and precision. Trailing zeros and the decimal point are printed if necessary.

E Floating point Same as e; with E for exponent.
G Floating point Same as g; with E for exponent if e format used

Characters

c Character Single character
s String pointer Prints characters until a null-terminator is pressed or precision is reached
% None Prints the % character

Pointers

n Pointer to int Stores (in the location pointed to by the input argument) a count of the chars written so far.
p Pointer Prints the input argument as a pointer; format depends on which memory model was used. It will be either XXXX:YYYY or YYYY (offset only).




Kim_Christensen@telus.net

http://www3.bc.sympatico.ca/Kim_Christensen/index.html