我将如何在 C 中将数字乘以 -1？

Question

i want to do this because i don't want to output a negative number. So i'd like to multiply it by -1 to make it positive. Thanks in advance.

Answer 1

There's a function called abs that gives you that:

int x = -1;
int y = abs(x);

It effectively gives you the number without the sign, or the "absolute value" .