help me！！！

bj12z_wangziqian @ 2022-11-12 16:07:45

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
char a[10000];
long long  b[10000];
long long  c[10000];
int wieshu(int i)
{
    int k=0,m=i;
    if(i==0) return 1;
    for(;i!=0;k++)
    {
        i/=10;
    }
    if(m<0) {return (k+1);}
    else return k;
}
int main()
{
    int n;
    cin >> n;
    for(int i = 0;i<n;i++)
    {
        cin >> a[i];
        if(a[i]=='a'||a[i]=='b'||a[i]=='c')
        {
            cin  >> b[i] >> c[i];
        }
        else
        {
            b[i] = a[i] - '0';
            a[i] = a[i-1];
            cin >> c[i];
        }
    }
    for(int i = 0;i<n;i++)
    {
        if(a[i] == 'a')
        {
            cout << b[i] << "+" << c[i] << "=" << b[i]+c[i] << endl;
            cout << wieshu(b[i]) + wieshu(c[i]) + wieshu(b[i]+c[i]) + 2 << endl;
        }
        if(a[i] == 'b')
        {
            cout << b[i] << "-" << c[i] << "=" << b[i]-c[i] << endl;
            cout << wieshu(b[i]) + wieshu(c[i]) + wieshu(b[i]-c[i]) + 2 << endl;
        }
        if(a[i] == 'c')
        {
            cout << b[i] << "*" << c[i] << "=" << b[i]*c[i] << endl;
            cout << wieshu(b[i]) + wieshu(c[i]) + wieshu(b[i]*c[i]) + 2 << endl;
        }
    }
    return 0;
}

by JustinXiaoJunyang @ 2022-11-12 16:26:03

@bj12z_wangziqian

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

int stoi(string l)
{
    int p = 0;
    for (int i = 0; i < l.length(); i++)
    {
        p = p * 10 + l[i] - '0';
    }
    return p;
}
int lenjs(int a, char b, int c, int d)
{
    int cnt;
    int t1 = a;
    int t2 = c;
    int t3 = d;
    if (t3 < 0)
    {
        cnt = 3;
    }
    if (t3 >= 0)
    {
        cnt = 2;
    }
    if (t1 == 0)
    {
        cnt++;
    }
    if (t2 == 0)
    {
        cnt++;
    }
    if (t3 == 0)
    {
        cnt++;
    }
    while (t1 != 0)
    {
        cnt++;
        t1 /= 10;
    }
    while (t2 != 0)
    {
        cnt++;
        t2 /= 10;
    }
    while (t3 != 0)
    {
        cnt++;
        t3 /= 10;
    }
    return cnt;
}
int x[1005];
char op[1005];
int y[1005];
int res[1005];
int len[1005];

//计算有x，op，y，分别代表第一个数、运算符号、第二个数。从cin输入得到。

//输入

/*用cin：

如果第一个字符串t的第一位是数字（既是代表第一个是数，是加法）.
因此就要将该字符串存成变量x，并且op='+'，再输入y。
如果第一个字符串是a||b||c，就op赋值，再输入x、y。

*/

int main()
{
    int n;
    cin >> n;
    string t;
    for (int i = 1; i <= n; i++)
    {
        cin >> t;
        if ('a' <= t[0] && t[0] <= 'c')
        {
            if (t[0] == 'a')
            {
                op[i] = '+';
            }
            if (t[0] == 'b')
            {
                op[i] = '-';
            }
            if (t[0] == 'c')
            {
                op[i] = '*';
            }
            cin >> x[i] >> y[i];
        }
        if ('0' <= t[0] && t[0] <= '9')
        {
            x[i] = stoi(t);
            cin >> y[i];
            op[i] = op[i - 1];
        }
    }
    for (int i = 1; i <= n; i++)
    {
        if (op[i] == '+')
        {
            res[i] = x[i] + y[i];
        }
        if (op[i] == '-')
        {
            res[i] = x[i] - y[i];
        }
        if (op[i] == '*')
        {
            res[i] = x[i] * y[i];
        }
        len[i] = lenjs(x[i], op[i], y[i], res[i]);
    }
    for (int i = 1; i <= n; i++)
    {
        cout << x[i] << op[i] << y[i] << "=" << res[i] << endl;
        cout << len[i] << endl;
    }
    return 0;
}

by bj12z_wangziqian @ 2022-11-12 16:52:26

@JustinXiaoJunyang

感谢大佬

好人一生平安！

by JustinXiaoJunyang @ 2022-11-12 16:56:26

@bj12z_wangziqian 谢谢