I need some guidance on an assignment I'm working on for school. The objectives of this assignment are to read data from a binary file, use some basic class functionality, store objects in an array and produce a neatly formatting report.
#include <fstream>
#include <iostream>
#include <cstring>
using std::ifstream;
using std::strcpy;
using std::ios;
using std::cout;
using std::endl;
using std::setw;
class country {
char cname[20];
int pop[16];
public:
char* getName(char* name) {
strcpy(name, cname);
return name;
}
int getPopulation(int y) {
if (y<1986 || y>2001) return 0;
}
};
void doReport(country recs[], long nrecs);
int main(void) {
ifstream ifile("popdata.bin", ios::binary);
if (!ifile) { return 1; }
//find out how many records are in the file
ifile.seekg(0L, ios::end);
long numrecs = ifile.tellg() / sizeof(country);
country records[numrecs];
//don't forget to get back to start of file
ifile.seekg(0L, ios::beg);
//read data in
ifile.read(reinterpret_cast<char *>(records), numrecs * sizeof(country));
//close file
ifile.close();
doReport(records, numrecs);
return 0;
}
void doReport(country recs[], long nrecs) {
char buf[20];
cout << "Population data 1990 - 1995 (expressed in millions)\n" << endl;
cout << " Country 1990 1991 1992 1993 1994 1995" << endl;
cout << "--------------- ----- ----- ----- ----- ----- -----" << endl;
for (int i=0; i<nrecs; i++) {
cout << recs[i].getName(buf) << endl;
[TEX] psuedocode that i'm having a hard time with:
// for each year in required range
//print record's data for that year[/TEX]
}
}a hint given: The population data is expressed in thousands, but you have to display it expressed in millions. You will have to divide the values given by 1000 before displaying them.
The final report should look like this: http://www.kishwaukeecollege.edu/faculty/dklick/cis250/sampleOutput02.html
