How to cut decimal off without rounding in C

Question

How do I cut off decimal places in C without rounding?

For example if the number is 4.48

it will just show 4.4

%.1f rounds to 4.5

Answer 1

You can (ab)use the fact that integer division truncates and doesn't round:

float original = 4.48;

int tmp = original * 10; // 44.8 truncated to 44

float truncated = tmp / 10.0; // 4.4