c++从txt文件中读取数据

从txt文本中读取数据存入数组中

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

int main()
{
    ifstream infile;
    infile.open("1.txt");
    if(!infile) cout<<"error"<<endl;

    string str;
    int t1;
/* while(getline(infile,str)) //按行读取,遇到换行符结束 { infile.getline(str,10); cout<<str<<endl; } */
 /*//存入vector cout<<"存入vector"<<endl; vector<int> ve; while(infile>>t1) //按空格读取，遇到空白符结束 { ve.push_back(t1); } for(int i=0;i<ve.size();i++) cout<<ve[i]<<" "; cout<<endl; */

//存入数组
    cout<<"存入数组"<<endl;
    int a[3][4];
    int*p=&a[0][0];
    while(infile>>t1)             //遇到空白符结束
    {
        *p=t1;
         p++;
    }
    infile.close();
    for(int i=0;i<3;i++)
    {   for(int j=0;j<4;j++)
           cout<<a[i][j]<<"\t";
         cout<<endl;
    }
    return 0;
}