I am trying to run Matlab Code in QT Creature

Hello friends, I have these codes in Matlab

 function [ Mshifted, f ] = Func1( t0, ts, t1, df )
fs = 1/ts; 
t = Time_Vector(t0,ts,t1);
m = Message_Signal(t);
[M,m,df1]=fftseq(m,ts,df); 
M=M*ts;
f=[0:df1:df1*(length(m)-1)]-fs/2; 
Mshifted = abs(fftshift(M));
end

and result of code generation is here,I tried a few way and this is last one

 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 extern "C"
 {
 #include "Func1.h"
 }

 MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
 {
    ui->setupUi(this);

    emxArray_real_T *Mshifted;
    emxArray_real_T *f;
    for(int i =0;i<4096;i++)
    {
       f->data[i] = 0;
       Mshifted->data[i] = 0;
       f->size[i] = 0;
       Mshifted->size[i] = 0;

    }
 f->allocatedSize = 4096;
 f->canFreeData = (boolean_T)0;
 f->numDimensions = 4096;
 Mshifted->allocatedSize = 4096;
 Mshifted->canFreeData = (boolean_T)0;
 Mshifted->numDimensions = 4096;

    Func1(-0.2/2,0.001,0.2/2,0.3,Mshifted,f);
    //for(int i=0;i<10;i++)
    //ui->textEdit->append(QString::number(Mshifted->data[0]));

 }

 MainWindow::~MainWindow()
 {
    delete ui;
 }

It cant run the program and I have this error,probable it is about with out of border of array Starting D:\Qt Projects\build-untitled-Desktop_Qt_5_11_1_MinGW_32bit-Debug\debug\untitled.exe... The program has unexpectedly finished. The process was ended forcefully. D:/Qt Projects/build-untitled-Desktop_Qt_5_11_1_MinGW_32bit-Debug/debug/untitled.exe crashed.