сделанная программа для шара без отскока ктрактория \

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



int main()
{
    float x,y,Vx,Vy,dt;
    float g=9.8;

    string inpath="/home/user/text_in.txt";
    ifstream infile(inpath.c_str());
    string line;
    getline(infile,line);
    cout << line << endl;
    istringstream iny(line);
    iny>>x>>y>>Vx>>Vy>>dt;
    string outpath="/home/user/text_out.txt";
    cout << x << "\t" << y << "\t" << Vx << "\t" << Vy << endl;
    ofstream outfile;
    outfile.open(outpath.c_str());
    while(y>0){
        x=x+Vx*dt;
        y=y+Vy*dt;
        outfile <<x<<"   "<<y<< endl;
        Vy-=g*dt;

    }
    outfile.close();
    infile.close();
    return 0;
}