printf 和scanf 打印int float double等格式

格式	printf	scanf
%c	int	char *
%d, %i	int	int *
%o, %u, %x	unsigned int	unsigned int *
%ld, %li	long int	long int *
%lo, %lu, %lx	unsinged long int	unsigned long int *
%hd, %hi	int	short int *
%ho, %hu, %hx	unsigned int	unsigned short int *
%e, %f, %g	double	float *
%le, %lf, %lg	n/a	double *
%s	char *	char *
%[...]	n/a	char *
%p	void	void **
%n	int *	int *
%%	none	none

如double型，printf()用%f输出，而scanf用%lf来接受输入；