Error while converting csv file into matrices form using CvMLData

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I need to convert csv file into matrices.I wrote the following code.

#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/opencv.hpp>
#include <opencv2/core/core.hpp>
#include "opencv2/imgcodecs.hpp"
#include <opencv2/highgui/highgui_c.h>
#include <opencv2/ml.hpp>
#include <cstdlib>
#include<algorithm>
#include<fstream>
#include<string>
#include<iostream>
#include<stdlib.h>
#include<stdio.h>
using namespace cv;
using namespace cv::ml;
using namespace std;
int main(int, char**){



    const char *CSV_FILE = "/home/vidushi/Desktop/new/training.csv";
    const char *CSV_FILE1 = "/home/vidushi/Desktop/new/testing.csv";
    CvMLData dataFile;
    CvMLData dataFile1;
    // Load matrix data in csv format
    if (dataFile.read_csv(CSV_FILE) != 0)
    {
        fprintf(stderr, "Can't read csv file %s\n", CSV_FILE);
        return -1;
    }
    Mat dataMat(dataFile.get_values()); // Default data type is float
    int labels[11] = {1,1,1,1,1,1,1,1,1,1,1};
    Mat labelsMat(11, 1, CV_32SC1, labels);

    CvMLData dataFile1;
    // Load matrix data in csv format
    if (dataFile1.read_csv(CSV_FILE1) != 0)
    {
        fprintf(stderr, "Can't read csv file %s\n", CSV_FILE1);
        return -1;
    }
    Mat dataMat1(dataFile1.get_values()); // Default data type is float


    Ptr<SVM> svm = SVM::create();
    svm->setType(SVM::C_SVC);
    svm->setKernel(SVM::LINEAR);
    svm->setTermCriteria(TermCriteria(TermCriteria::MAX_ITER, 100, 1e-6));
    svm->train(dataMat, ROW_SAMPLE, labelsMat);


    float res = svm->predict(dataMat1);

    cout << "- Result of prediction:" << res;



    return 0;
}
When i try to compile this code.Error is generated - 
/home/vidushi/Desktop/new/svm_class.cpp:29:5: error: ‘CvMLData’ was not declared in this scope
     CvMLData dataFile;
     ^
/home/vidushi/Desktop/new/svm_class.cpp:30:14: error: expected ‘;’ before ‘dataFile1’
     CvMLData dataFile1;
              ^
/home/vidushi/Desktop/new/svm_class.cpp:32:9: error: ‘dataFile’ was not declared in this scope
     if (dataFile.read_csv(CSV_FILE) != 0)
         ^
/home/vidushi/Desktop/new/svm_class.cpp:37:17: error: ‘dataFile’ was not declared in this scope
     Mat dataMat(dataFile.get_values()); // Default data type is float
                 ^
/home/vidushi/Desktop/new/svm_class.cpp:41:14: error: expected ‘;’ before ‘dataFile1’
     CvMLData dataFile1;
              ^
/home/vidushi/Desktop/new/svm_class.cpp:43:9: error: ‘dataFile1’ was not declared in this scope
     if (dataFile1.read_csv(CSV_FILE1) != 0)
         ^
/home/vidushi/Desktop/new/svm_class.cpp:48:18: error: ‘dataFile1’ was not declared in this scope

Please tell how to resolve this error. I am using opencv 3.2.0, ubuntu 16.04 LTS.