qs on to read numbers from a file

Pg0715 (40)
ok so I have three numbers in a file called input.dat and im able to call them but I want to know how to get those three numbers in that function and able to use them in other functions.

this is what I have any help appreciated

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double openFile()
{
  int num1=0;
  int num2=0;
  int num3=0;
  int numTotal=0;
  ifstream fin;
  fin.open("input.dat");
  if(fin.fail())
    {
      cout<<"error"<<endl;
      return -1.0;
    }
  fin>>num1>>num2>>num3;
  fin.close();
  cout<<"the numbers are:"<<num1<<" "<<num2<<" "<<num3<<endl;

  return 0;
}
kofikofi123 (1)
This may be a dumb dumb way but hey, yolo.

This uses the stdio header file, and this is just an idea, not an answer
It gets a* number

numbers.txt
1 is kofi

code
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#include <stdio.h>
#include <iostream>


int main(int argc, char * argv[]){
  int x = 0;
  FILE * pFile;
  pFile = fopen("numbers.txt", "r");
  if (pFile){
  
    fscanf(pFile, "%d+", &x);
    
  
    fclose(pFile);
  
    std::cout << x << std::endl;//yes I could have used printf, but again, yolo
  //printf("%d", x);
  }
}


output
>> 1


You could use what your os provided(like windows (win32) filesysteming thingy magigy)
Last edited on
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