全T求调

__yiLIUyi__ @ 2024-07-25 14:50:44

#include<bits/stdc++.h>
using namespace std;
stack<int>n;
char c;
string str;
int num,i,top,k;
int main(){
    cin>>str;
    for(c=str[k];c!='@';k++){
        if('9'>=c&&c>='0'){
            int a=c-'0';
            num=num*10+a;
            i=1;
        }
        else if(c=='.'){
            n.push(num);
            num=i=0;
            top++;
        }
        else{
            int a=n.top();
            n.pop();
            int b=n.top();
            n.pop();
            if(c=='+')n.push(b+a);
            if(c=='-')n.push(b-a);
            if(c=='*')n.push(b*a);
            if(c=='/')n.push(b/a);
        }
    }cout<<n.top();
}

by Bismuth_ @ 2024-07-25 15:01:33

@yiLIUyi 每个回合c要实时更新

by __yiLIUyi__ @ 2024-07-25 15:03:21

@yzx_mexxi for循环开头更新了啊

by Bismuth_ @ 2024-07-25 15:04:13

@yiLIUyi 是要随时更新，k++一次就更新一次

by __yiLIUyi__ @ 2024-07-25 15:06:09

@yzx_mexxi 现在没有输出了：）

by Bismuth_ @ 2024-07-25 15:08:19

@yiLIUyi ?代码发出来，我本地调了能过

by __yiLIUyi__ @ 2024-07-25 15:14:01

@yzx_mexxi

#include<bits/stdc++.h>
using namespace std;
stack<int>n;
char c;
string str;
int num,i,top,k;
int main(){
    cin>>str;
    for(;c!='@';k++,c=str[k]){
        if('9'>=c&&c>='0'){
            int a=c-'0';
            num=num*10+a;
            i=1;
        }
        else if(c=='.'){
            n.push(num);
            num=i=0;
        }
        else{
            int a=n.top();
            n.pop();
            int b=n.top();
            n.pop();
            if(c=='+')n.push(b+a);
            if(c=='-')n.push(b-a);
            if(c=='*')n.push(b*a);
            if(c=='/')n.push(b/a);
        }
    }cout<<n.top();
    return 0;
}

by Bismuth_ @ 2024-07-25 15:14:46

@yiLIUyi e,第一次循环c没有值

by __yiLIUyi__ @ 2024-07-25 15:16:03

@yzx_mexxi 哇谢谢dalao

by Bismuth_ @ 2024-07-25 15:16:43

@yiLIUyi 红联好评

by __yiLIUyi__ @ 2024-07-25 15:17:32

@yzx_mexxi 是我头图吗