5-3 逆序的三位数

#include <stdio.h>

int main()
{
int num;
scanf_s("%d", &num);
int temp[3];
int head=1;
for (int i = 0; i < 3; i++)
{
temp[i] = num % 10;
num /= 10;
}
for (int i = 0; i < 3; i++)
{
if (temp[i] == 0 && head == 1)
;
else
{
printf("%d", temp[i]);
head = 0;
}

}
}