[Cereology]

How do I make a text document open in c++

Code

#include<iostream>
#include<fstream>
#include<stdlib.h>
#include<vector>
#include<iomanip>
using namespace std;
int main(){
int i=0;
double sum=0;
string temp;
string line;
vector<string>nums;
ifstream myfile("S://Public/Davis/test.txt");
if(myfile.is_open()){
    while(myfile.good()){
        getline(myfile,line);
      nums.push_back(line);
    i++;
    }
    myfile.close();
}
else cout<<"Unable to open file";
for(int a=0;a<nums.size();a++){
    for(int k=a;k<nums.size();k++){
        if(nums[a]<nums[k]){
            temp=nums[a];
            nums[a]=nums[k];
            nums[k]=temp;
        }
    }
}
int u=nums.size();
int temp1=atoi(nums[0].c_str());
int temp2=atoi(nums[u-1].c_str());
double x=2/(1/double (temp1)+1/double (temp2));
ofstream myfile2("H:\\Avg Output.txt");
if(myfile2.is_open()){
myfile2<<"Sorted Numbers: ";
for(int i=0;i<nums.size();i++){
    if(i==nums.size()-1){
        myfile2<<nums[i]<<endl;
    }
    else{
        myfile2<<nums[i]<<", ";
    }
}
myfile2<<"Harmonic Mean: "<<x<<endl;
myfile2.close();
}
else cout<<"Unable to open file";
cout<<"Done!";
return 0;
}

I want the text document to open up at the end

[HFDone]

use system to run cmd start file.txt

[Iterator]

You can use WinApi function ShellExecute https://msdn.microsoft.com/en-us/library...s.85).aspx to open file with default program.

ShellExecute(NULL, L"open", L"Path to your txt file", NULL, NULL, SW_HIDE);

[LanMan]

As someone said you can use ShellExecute, system with cmd or WinExec.
Or even CreateProcess cmd.exe with /c parameter and your command

[Hoodie+]

If you're using standard C libraries you can just use the system() function and just specify the path of the file.

[0xDEAD10CC]

He did say notepad so if the default file handler for .txt extensions is not notepad.exe this ShellExecute or WinExec suggestion will fail, and same with letting the shell handle a command for you in any other way that doesn't call the notepad.exe program to execute explicitly. Just pass the file as a parameter when executing notepad.exe with something like CreateProcess on Windows.

First argument will accept a path to a file you wish to open:

Code

notepad.exe "C:/filepath/file.txt"

[Mouse❤️]

For something so simple, just use system(), but don't get comfortable with it.

[0xDEAD10CC]

For something so simple, just use system(), but don't get comfortable with it.

Anything but a null pointer with that function leads to undefined behavior. He's on Windows (most likely if he's mentioning notepad -- but the path in his example would suggest the same too), he can easily use CreateProcess with notepad.exe and argument matching a filepath.

[Mustys]

I hope this might help.

Code

var fileToOpen = "SomeFilePathHere";
var process = new Process();
process.StartInfo = new ProcessStartInfo()
{
    UseShellExecute = true,
    FileName = fileToOpen
};

process.Start();
process.WaitForExit();

[Iterator]

I hope this might help.

Code

var fileToOpen = "SomeFilePathHere";
var process = new Process();
process.StartInfo = new ProcessStartInfo()
{
    UseShellExecute = true,
    FileName = fileToOpen
};

process.Start();
process.WaitForExit();

Why you are posting C# code in C++ section

[Mustys]

Why you are posting C# code in C++ section

I just realized, was tired and it was late last night?