computer science

Question

Write a function to sort the patients’ information based on their status.

Answer 1

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#define PATIENT_STR_SIZE (18)

typedef struct _TPatient

{

char socialSecurityNumber[PATIENT_STR_SIZE];

char dob[PATIENT_STR_SIZE];

double balance;

long accountNum;

int status;

} * TPatient;

#define PATIENT_SIZE (sizeof(struct _TPatient))

#define MAX_NUM_PATIENTS (100)

struct _TPatient patients[MAX_NUM_PATIENTS];

typedef int (*PatientCompareCallback) (const void *,const void *);

int ComparePatientByStatus( const void * rec1, const void * rec2)

{

TPatient patientRecPtr1 = (TPatient) rec1;

TPatient patientRecPtr2 = (TPatient) rec2;

return ( patientRecPtr1->status - patientRecPtr2->status);

}

int ComparePatient( const void * rec1, const void * rec2)

{

TPatient patientRecPtr1 = (TPatient) rec1;

TPatient patientRecPtr2 = (TPatient) rec2;

return ( strcmp(patientRecPtr1->socialSecurityNumber,patientRecPtr2->socialSecurityNumber));

}

void PatientSort(TPatient patients,int n,PatientCompareCallback patientCompareFuncPtr )

{

qsort(patients,n,PATIENT_SIZE,patientCompareFuncPtr);

}

Patient_Dump(TPatient patientRec,char * strMsg)

{

if (strMsg!=NULL)

{

printf("**********************************************\n");

printf(strMsg); printf("\n");

}

printf("***********************************************\n");

printf(" social security # >%s< \n",patientRec->socialSecurityNumber);

printf(" dob >%s< \n",patientRec->dob);

printf(" balance >%6.2f< \n",patientRec->balance);

printf(" account # >%ld< \n",patientRec->accountNum);

printf(" status = %d \n",patientRec->status);

}

void DumpPatientList(TPatient patients, int n, char * strMsg)

{

int i;

char strMsgRecNum[55];

if (strMsg!=NULL)

{

printf("************************************************\n");

printf(strMsg); printf("\n");

}

printf("************************************************\n");

for (i=0; i<n; i++)

{

sprintf(strMsgRecNum,"Patient rec # %d of %d",(i+1),n);

Patient_Dump(&patients[i],strMsgRecNum);

}

}

int main()

{

struct _TPatient patients[]= {

{"123-45-6789","01/02/2003",1234.56,24680,8},

{"987-65-4321","04/05/2006",2345.67,13579,6},

{"246-80-1234","07/08/2010",1357.99,80462,4},

{"135-79-4321","09/11/2013",8642.99,97531,2}

};

PatientSort(patients,4,ComparePatientByStatus);

DumpPatientList(patients,4,(char*)"SORTED BY STATUS");

printf("------------------------------------------------------------------\n");

printf("------------------------------------------------------------------\n");

PatientSort(patients,4,ComparePatient);

DumpPatientList(patients,4,(char*)"SORTED BY SOCIAL SECURITY #");

}