C++ 读取.txt数据

 txt 转成 other

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

int main() {
    
    string buf;
    ifstream in("magic.txt");
    cout<< "magic(4) = "<<endl;
    int i = 0;
    int arr[4][4];//可以转为动态
    istringstream istr;
    while(getline(in,buf)){               
        istr = istringstream(buf);
        int j = 0;
        char ch;
        while(istr) {istr >>arr[i][j++];}
        ++i;
        //输出数组
        j = 0;
        while(j<4){
                       
            cout << arr[i][j] <<" ";
            j++;
        }
        cout << endl;                
    }
}