printf 格式化

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).


    char *cc = "1314847012000000000";
    UINT64 CC =0;
    sscanf(cc,"%lld",&CC);