山东省第二届ACM大学生程序设计竞赛——Mathman Bank

题目链接:http://acm.sdut.edu.cn/sdutoj/problem.php?action=showproblem&problemid=2167

Mathman Bank

简单模拟即可！！！

#include<iostream>
#include<cstdio>
#include<string>
#include<algorithm>
using namespace std;

struct node
{
    string name;
    string pass;
    int sum;
}no[1010];

int Find(string name,int k)
{
    for(int i=0;i<k;i++)
        if(no[i].name==name)
            return i;
    return -1;
}

int main()
{
    int n;
    char op;
    string name,pass,name2,pass2;
    int sum;
    int k;
    while(cin>>n)
    {
        k=0;
        while(n--)
        {
            cin>>op;
            if(op=='O')
            {
                cin>>name>>pass>>sum;
                if(Find(name,k)!=-1)
                    printf("Account exists.\n");
                else
                {
                    no[k].name=name;
                    no[k].pass=pass;
                    no[k].sum=sum;
                    k++;
                    printf("Successfully opened an account.\n");
                }
            }
            else if(op=='D')
            {
                cin>>name>>sum;
                if(Find(name,k)!=-1)
                {
                    no[Find(name,k)].sum+=sum;
                        printf("Successfully deposited money.\n");
                }
                else
                    printf("Account does not exist.\n");
            }
            else if(op=='W')
            {
                cin>>name>>pass>>sum;
                if(Find(name,k)!=-1)
                {
                    if(no[Find(name,k)].pass==pass)
                        if(no[Find(name,k)].sum>=sum)
                            {
                                no[Find(name,k)].sum-=sum;
                                printf("Successfully withdrew money.\n");
                            }
                        else
                            printf("Money not enough.\n");
                    else
                        printf("Wrong password.\n");
                }
                else
                    printf("Account does not exist.\n");
            }
            else if(op=='T')
            {
                cin>>name>>pass>>name2>>sum;
                if(Find(name,k)!=-1&&Find(name2,k)!=-1) //这里应该先判断两个账号是否存在，再判断第一个账号的密码是否正确
                {
                    if(no[Find(name,k)].pass==pass)
                        if(no[Find(name,k)].sum>=sum)
                            {
                                no[Find(name,k)].sum-=sum;
                                no[Find(name2,k)].sum+=sum;
                                printf("Successfully transfered money.\n");
                            }
                        else
                            printf("Money not enough.\n");
                    else
                        printf("Wrong password.\n");
                }
                else
                    printf("Account does not exist.\n");
            }
            else if(op=='C')
            {
                cin>>name>>pass;
                if(Find(name,k)!=-1)
                {
                    if(no[Find(name,k)].pass==pass)
                        printf("%d\n",no[Find(name,k)].sum);
                    else
                        printf("Wrong password.\n");
                }
                else
                    printf("Account does not exist.\n");
            }
            else
            {
                cin>>name>>pass>>pass2;
                if(Find(name,k)!=-1)
                {
                    if(no[Find(name,k)].pass==pass)
                    {
                        no[Find(name,k)].pass=pass2;
                        printf("Successfully changed password.\n");
                    }
                    else
                        printf("Wrong password.\n");
                }
                else
                    printf("Account does not exist.\n");
            }
        }
    }
    return 0;
}