float

float.c

#include <stdio.h>

int 
main() {
	double f = 1.0/3.0;
	double f2;
	char tmp[100];
	sprintf(tmp, "%lf", f);
	sscanf(tmp, "%lf", &f2);
	printf("f = %lf f2 = %lf , %d\n", f, f2, (f2 == f));	// should be 0 (false)

	sprintf(tmp, "%la", f);
	sscanf(tmp, "%la", &f2);
	printf("f = %la f2 = %la , %d\n", f, f2, (f2 == f));	// should be 1 (true)

	return 0;
}