LubsWangKillThemAll @ 2022-05-30 18:27:45
#include<iostream>
#include<stdio.h>
#include<stack>
using namespace std;
stack<int>s;
int main()
{
char c;
int num = 0;
while (1)
{
cin >> c;
if (c >= '0' && c >= '9')
{
num = num * 10 + c - '0';
}
else if (c == '.')
{
s.push(num);
num = 0;
}
else if (c == '+')
{
int num1 = s.top();
s.pop();
int num2 = s.top();
s.pop();
s.push(num1 + num2);
}
else if (c == '-')
{
int num1 = s.top();
s.pop();
int num2 = s.top();
s.pop();
s.push(num2 - num1);
}
else if (c == '*')
{
int num1 = s.top();
s.pop();
int num2 = s.top();
s.pop();
s.push(num1 * num2);
}
else if (c == '/')
{
int num1 = s.top();
s.pop();
int num2 = s.top();
s.pop();
s.push(num2 / num1);
}
else if (c == '@')
{
break;
}
}
cout << s.top();
}by LubsWangKillThemAll @ 2022-05-30 18:28:30
啊说错了 3TLE 3RE
by Xy_top @ 2022-05-30 18:29:24
何必写的这么麻烦呢？
by Xy_top @ 2022-05-30 18:29:39
#include <bits/stdc++.h>
using namespace std;
stack<int> n;
char ch;
int s,x,y;
int main()
{
while(ch!='@')
{
ch=getchar();
switch(ch)
{
case '+':x=n.top();n.pop();y=n.top();n.pop();n.push(x+y);break;
case '-':x=n.top();n.pop();y=n.top();n.pop();n.push(y-x);break;
case '*':x=n.top();n.pop();y=n.top();n.pop();n.push(x*y);break;
case '/':x=n.top();n.pop();y=n.top();n.pop();n.push(y/x);break;
case '.':n.push(s);s=0;break;
default :s=s*10+ch-'0';break;
}
}
printf("%d\n",n.top());
return 0;
}by Xy_top @ 2022-05-30 18:30:03
看看是不是结构更清晰点，更容易理解点
by LubsWangKillThemAll @ 2022-05-30 18:30:22
@stdios 哦哦哦
by _HiKou_ @ 2022-05-30 18:54:07
好臭啊（
by LubsWangKillThemAll @ 2022-06-01 08:49:28
@Hi_Kou 都发霉了
by Come_wonka @ 2022-08-10 09:48:31
@stdios 谢谢大佬，我们菜鸡只熟练最开始的多重if