creating object in c++ using input file

Question

i am mostly familiar with java and c++ is not my strong spot..

I am trying to write algorithm for cpu scheduler most of my code is syntax error free but I am stuck to one problem.

My program uses 2 classes Process and ProcessQueue

my main looks like this

int main(){

    fstream f;

    ProcessQueue pq;

    f.open("input.txt");

    if (!f)
    {
        cout << "File not Found";
    }else{
    int noOfProcess;

    f >> noOfProcess;
    Process *p;
    p = new Process[noOfProcess];

    for (int i = 0;i<noOfProcess;i++){
        int arivalTime;
        int cpuTime;
        int prorityNumber;

        f >> arrivalTime;
        f >> cpuTime;
        f >> prorityNumber;

        p[i] = new Process(arrivalTime,cpuTime,prorityNumber);
    }
return 0;
}

but p[i] is causing trouble.. I am not able to use parametric constructor,setters.

it gives following error

enter image description here

The variable p doesn't point to an array of pointers, but an array of objects. Try p[i] = Process(...) (without the new keyword). — Some programmer dude
– Some programmer dude, Commented Nov 13, 2016 at 10:46

Ed Heal · Accepted Answer · 2016-11-13 10:47:46Z

2

Change

p[i] = new Process(arrivalTime,cpuTime,prorityNumber);

to

p[i] = Process(arrivalTime,cpuTime,prorityNumber);

as p[pi] is of type Process

Also use std::array or str::vector

answered Nov 13, 2016 at 10:47

Ed Heal

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