Printf 格式化简要总结

格式代码	A	ABC	ABCDEFGH
%S	A	ABC	ABCDEFGH
%5S	####A	##ABC	ABCDEFGH
%.5S	A	ABC	ABCDE
%5.5S	####A	##ABC	ABCDE
%-5S	A####	ABC##	ABCDEFGH

              

Printf 格式化字符串

 

格式代码	1	-12	12345	123456789
%d	1	-12	12345	123456789
%6d	#####1	###-12	#12345	123456789
%.4d	0001	-0012	12345	123456789
%6.4d	##0001	#-0012	#12345	123456789
%-4d	1####	-12#	12345	123456789
%04d	0001	-012	12345	123456789
%+d	+1	-12	+12345	+123456789

                                                   Printf格式化整型数值

 

格式代码	1	.01	.00012345	12345.6789
%f	1.000000	0.010000	0.000123	12345.678900
%10.2d	######1.00	#####0.01	######0.00	##12345.67
%e	1.000000e+00	1.000000e-02	1.234500e-04	1.234568e+04
%.4e	1.0000e+00	1.0000e-02	1.2345e-04	1.2346e+04
%g	1	0.01	0.00012345	12345.7

 

格式代码	6.023e23
%f	60229999999999975882752.000000
%10.2e	60229999999999975882752.00
%e	6.023000e+23
%.4e	6.0230e+23
%g	6.023e+23