Can anyone help me with basic C++?

Data Design Scheme
Declare lastName,firstName, fullName as string
Declare payrate,hours,gros,tax,net as real
Declare answer as character
Declare empCounter as integer
Declare reportFile as file
*/

#include <stdio.h> // for printf() and scanf()
#include <string.h> // for strcpy() and strcat()
#include <stdlib.h> // for exit()
#define addr(var) &var
#define REPORTHEADINGS " Employee Pay Hours Gross Tax Netn"
#define REPORTHEADINGS2 " Name Rate Worked Pay Amount Payn"
#define REPORTLINE " ======== ==== ====== ===== ====== ======/n"
#define format " %-23s%8.2f%10.2f%10.2f%8.2f%10.2fn"
#define TAXRATE 0.15
#define OVERTIMERATE 1.5
#define BLANKSPACE " /n"


int main(void) // main function HEADER
{

char lastName[15+1]; // max length is 15 characters
char firstName[10+1]; // max length is 10 characters
char fullName[15+10+2+1];
float payrate,hours,gross; // variables declaration section
float tax,net;
float payratetotal,hourstotal,grosstotal,taxtotal,nettotal;
float avgpayrate,avghours,avggross,avgtax,avgnet;
char answer;
int empCounter;
FILE * reportFile; // read "reportFile is a pointer to a file "

reportFile = fopen("c:tempmyReport.txt","wt");
if (reportFile == NULL)
{
printf(" ... it did not create the report file ... exiting applicationn");
fflush(stdin);
getchar();
exit(100);
}
empCounter = 0; // initialize the count
payratetotal = hourstotal = grosstotal = taxtotal = nettotal = 0;
printf(REPORTHEADINGS);
fprintf(reportFile,REPORTHEADINGS);
fprintf(reportFile,REPORTHEADINGS2);
fprintf(reportFile,REPORTLINE);
do
{
printf(" Enter the last name ==> ");
scanf("%s",lastName);
printf(" Enter the first name ==> ");
scanf("%s",firstName);
printf("Enter hourly pay rate ");
scanf("%f",addr(payrate));
printf("Enter hours worked this pay period");
scanf("%f",addr(hours));

/* processing */
if (hours <= 40)
gross = hours * payrate;
else
gross = 40 * payrate + OVERTIMERATE * payrate * (hours-40);
tax = gross * TAXRATE;
net = gross - tax;

payratetotal = payratetotal + payrate;
hourstotal = hourstotal + hours;
grosstotal = grosstotal + gross;
taxtotal = taxtotal + tax;
nettotal = nettotal + net;


strcpy(fullName,lastName); // combine last + first names into full name
strcat(fullName,", ");
strcat(fullName,firstName);

//printf(format,fullName,payrate,hours,gross,tax,net); /* output */
printf(format,fullName,payrate,hours,gross,tax,net);
fprintf(reportFile,format,fullName,payrate,hours,gross,tax,net); /* output */
empCounter = empCounter + 1;
printf(" Do you have another employee(Y/N) ");
fflush(stdin); // clear the input buffer FIRST !!!!!!!!!!
scanf("%c",addr(answer));
} while (answer == 'Y' || answer == 'y');

printf(" You processed %2d employeesn",empCounter);
fprintf(reportFile,BLANKSPACE);
printf(format,"Totals",payratetotal,hourstotal,grosstotal,taxtotal,nettotal);
fprintf(reportFile,format,"Totals",payratetotal,hourstotal,grosstotal,taxtotal,nettotal); printf(format,"Averages",payratetotal/empCounter,hourstotal/empCounter,grosstotal/empCounter,taxtotal/empCounter,nettotal/empCounter);
fprintf(reportFile,format,"Averages",payratetotal/empCounter,hourstotal/empCounter,grosstotal/empCounter,taxtotal/empCounter,nettotal/empCounter);
fclose(reportFile);
fflush(stdin);
getchar();
return 0; // successful "Run" / complete, without Fault
}

and it should be changed like this.. in this order
3.0 Assign 3 - Payroll Version 3
3.1 getEmployeeData(out lastname,firstName as string,
out hours, payrate as real)
3.2 CalcGross(in hours, payrate as real, out grossPay as real)
3.3 CalcTax(in grossPay as real,
in TAXRATE as const real = 15%,
out taxdue as real)
3.4 CalcNet(in grossPay,taxdue as real, out netPay as real)
3.5 printDetailReportLine(in lastname,firstName as string,
in hours, payrate,grossPay,taxdue,
netPay as real)
3.6 printSummaryReport(in totHours, totPayrate,totGrossPay, totTaxdue,
totNetPay as real,
in empCounter as integer)



#include <stdio.h>
#define REPORTFORMATLINE " %3d + %3d = %4d\n"
void getTwoValues(int * a,int * b); // 3.1
int calcTheSum(int a, int b); // 3.2
void showReport(int a,int b,int sum); // 3.3

int main(void)
{
int a,b, sum;


getTwoValues(&a,&b); // call 3.1
sum = calcTheSum(a,b); // call 3.2
showReport(a,b,sum); // call 3.3
fflush(stdin);
getchar();
return 0;
}
void getTwoValues(int * a,int * b) // 3.1
{
printf(" Enter the value for a ==> ");
scanf("%d",a);
printf(" Enter the value for b ==> ");
scanf("%d",b);
}
int calcTheSum(int a, int b) // 3.2
{
return a + b;
}
void showReport(int a,int b,int sum)
{
printf(REPORTFORMATLINE, a,b,sum);
printf(" Press any key to end ....\n");
}