Counting of object containing a particular string match in a binary file – Computer Sir Ki Class

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Exam Questions-CBSE12D-2017-04B #CPP#6049    siteicon   siteicon  

Problem Statement - Counting of object containing a particular string match in a binary file

Write a definition for function COUNTDEPT( ) in C++ to read each object of a binary file TEACHERS.DAT, find and display the total number of teachers in the department MATHS. Assume that the file TEACHERS.DAT is created with the help of objects of class TEACHERS, which is defined below:

class TEACHERS
{
  int TID; char DEPT[20];
public:
  void GET()
  {
    cin>>TID;gets(DEPT);
  }
  void SHOW()
  {
    cout<<TID<<":"<<DEPT<<endl;
  }
  char *RDEPT(){return DEPT;}
};

Solution

TC++ #6049

 

void COUNTDEPT()
{
  ifstream F;
  F.open("TEACHERS.DAT",ios::binary);
  int count=0;
  Teachers obj;
  while(F.read((char*)&obj,sizeof(obj)))
  {
    if(strcmp(obj.RDEPT(),"MATHS")==0) 
      count++;
  }
  cout<<"Number of MATHS teachers :"<<count<<endl;
  F.close(); 
}
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CSKC| Created: 8-Jan-2019 | Updated: 28-Jan-2020|CBSE12D-2017

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Post Containing Topic(s)

Handling Binary Files




Solved Problem(s)
04C    CBSE12D-2017
04B    CBSE12D-2015
04C    CBSE12A-2017
04B    CBSE12A-2017
04C    CBSE12A-2018
04B    CBSE12A-2018
04B    CBSE12A-2016

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