Why does Subtraction float from Integer return a fasle Value?

Asked Nov 10 '17 at 15:22

Active Nov 10 '17 at 15:25

Viewed 41 times

Im trying to get only the number after the dot in a number

float number;
printf("Enter a real number:\n");
scanf("%f", &number);
int integerPart = (int)number;
int fractionalPart = (int)((number -(float)integerPart) *1000);
printf("The fractional part: %d\n", fractionalPart);

when i put 256.589 i get output of 588 why?

edited Nov 10 '17 at 15:25

asked Nov 10 '17 at 15:22

Reznik

2,663
1
11
31

1

_Why does Dividing float...?_ I don't see any division here – B001ᛦ Nov 10 '17 at 15:24
@B001 I think he might mean "separating" with the use of the term "dividing". – Christian Gibbons Nov 10 '17 at 15:25
1

Use `scanf("%f", &number); printf("%.20e\n", number);` to see the result of data entry and that `number` is not _exactly_ 256.589 but maybe 2.56588989257812500000e+02 – chux - Reinstate Monica Nov 10 '17 at 15:47

Why does Subtraction float from Integer return a fasle Value?

0 Answers0