Format a string

% U indicates that the value range of the unsigned decimal output integer is 0-65535, that is, the corresponding binary number 0-1111111111111111 (16 1 ).

% LD indicates output in decimal long integer type

% X, % x unsigned integer in hexadecimal format

% U, used to format a string. The utable shows that the string is formatted as an unsigned integer (unsigned INT)










For example: int I = 1, j =-1;

The signed integer-1 is expressed as 0 xfffe in hexadecimal notation.

The result of printf ("I = % u, j = % u", I, j) is

1, 4294967295 (0xfffe is directly converted to decimal)

% D signed 10-digit integer
% I signed 10-digit integer
% O unsigned octal integer
% U unsigned 10-digit integer
% X unsigned hexadecimal number, expressed in lowercase abcdef
% X unsigned hexadecimal number, expressed in abcdef
% F/F floating point number
% E/E floating point in scientific format
% G indicates the minimum number of digits in % F and % E to indicate the floating point G in the same g format, but expressed as an index.
% C single character
% S string