第3測資點我跑出來是8.99%

可是它都說我跑出來是8.98%

#include<stdio.h>

double round(double input)

{

if(input >= 0.0)

        return (int)((input * 100) + 0.5) / 100.;

   return (int)((input * 100) - 0.5) / 100.;

}

int main()

{

int n,m,p,i;

double x;

scanf("%d",&n);

for(i=0;i<n;i++)

{

scanf("%d %d",&m,&p);

x = (p-m);

x = x/m*100;

x = round(x);

if((x > 0 && x >= 10)||(x < 0 && x <= -7)) printf("%.2f%% dispose\n",x);

if((x > 0 && x < 10)||(x < 0 && x > -7)) printf("%.2f%% keep\n",x);

if(x == 0) printf("0.00%% keep\n");

}

return 0;

} 

這樣打有錯嗎?