简单的计算器

sng2025102 LV 5 @ 2025-7-9 16:27:28

#include #include #include using namespace std; int main()

{

double a,b;
char c;
cin>>a>>c>>b;
if(c=='+')
{
	cout<<fixed<<setprecision(2)<<a+b;
}
else if(c=='-')
{
	cout<<fixed<<setprecision(2)<<a-b;
}
else if(c=='*')
{
	cout<<fixed<<setprecision(2)<<a*b;
}
else if(c=='/'&&b!=0)
{
	cout<<fixed<<setprecision(2)<<a/b;
}
else
{	
cout<<"No Answer.";
}

return 0;

}

sng2025102 @ 2025-7-10 15:23:47

#include #include #include using namespace std; int main() {

double a,b;
char c;
cin>>a>>c>>b;
switch(c)
{
	case'+':cout<<fixed<<setprecision(2)<<a+b;break;
	case'-':cout<<fixed<<setprecision(2)<<a-b;break;
	case'*':cout<<fixed<<setprecision(2)<<a*b;break;
	case'/':
	if (b==0)
	{
		cout<<"No Answer.";
	}
	else
	{
	cout<<fixed<<setprecision(2)<<a/b;
	}
	break;
	default:cout<<"No Answer.";
}
return 0;

}

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