题目1071 不可以!
已AC代码:
#include<cstdio>
#include<cmath>
using namespace std;
int main()
{
float x, y;
while((scanf("%f%f", &x, &y)) != EOF)
{
if((!x) || (!y))
printf("Signs can't be sure\n");
else if(!(x-fabs(x))&&!(y-fabs(y)) || (x-fabs(x))&&(y-fabs(y)))
printf("Signs are not opposot\n");
else
printf("Signs are opposite\n");
}
return 0;
}
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