寒假集训附加题目题解报告（2）——加减乘除

#include "iostream"
#include "iomanip"
using namespace std;
int main()
{
long n,a,b;
char c;
cin>>n;
while(n--)
{
cin>>c>>a>>b;
if(c=='+')cout<<a+b<<endl;
if(c=='-')cout<<a-b<<endl;
if(c=='*')cout<<a*b<<endl;
if(c=='/'&&(a%b)!=0)cout<<setiosflags(ios::fixed)<<setprecision(2)<<1.0*a/b<<endl;
if(c=='/'&&(a%b)==0)cout<<a/b<<endl;
}
}