如何在 .txt 文件中对数值进行流式处理，并在同一程序中通过 ifstream 读取相同的数据

Question

#include <iostream>
#include <fstream>
using namespace std;
int main()
{
    string mobile;
    int N[10];
    ofstream file;
    file.open("my.txt");
    cout<<"enter mobile ";
    getline(cin, mobile);
    file<<mobile<<endl;
    cout<<"enter number ";
    cin>>N[10];
    file<<N;
    file.close();
    int a;
    cin.ignore();
    cout<<"press 1 to know details ";
    cin>>a;
    if(a==1)
    {
        ifstream file1;
        file1.open("my.txt");
        string str;
        int num;
        file1>>str;
        file1>>num;
        cout<<"company "<<str<<endl<<"number  "<<num;
        file1.close();
    }
    return 0;
}

字符串值被完美存储和读取，但输入的整数值以 0x61fdf0 的形式存储，当它应该再次打印时，它总是打印 0。我正在尝试存储手机号码。

我正在代码块中编码。

Answer 1

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

const int NUM = 10;

int main()
{
    string mobile;
    int n[NUM];
    ofstream file;
    file.open("my.txt");
    cout << "enter mobile: ";
    getline(cin, mobile);
    file << mobile << endl;
    cout << "enter number ";
    file << n[0];
    file.close();
    int a;
    cin.ignore();
    cout << "press 1 to know details ";
    cin >> a;
    if(a==1)
    {
        ifstream file1;
        file1.open("my.txt");
        string str;
        int num;
        (file1, str);
        file1 >> num;
        cout << "company: " << str <<"\nnumber: " << num << endl;
        file1.close();
    }
    return 0;
}

如何在 .txt 文件中对数值进行流式处理，并在同一程序中通过 ifstream 读取相同的数据

How to ofstream a numeric value in a .txt file and read same data through ifstream in same program

c++

codeblocks

c++11