Mega Code Archive
Use fstream to read and write a file
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#include <iostream>
#include <fstream>
using namespace std;
int main()
{
char ch;
fstream finout("test.dat");
if(!finout) {
cout << "Cannot open file for output.\n";
return 1;
}
for(int i=0; i < 3; ++i) finout.put('X');
if(!finout.good()) {
cout << "Error occurred while writing to the file.\n";
return 1;
}
finout.flush();
cout << "Here are the next ten characters: ";
for(int i=0; i < 10; ++i) {
finout.get(ch);
cout << ch;
}
cout << endl;
if(!finout.good()) {
cout << "Error occurred while reading from the file.\n";
return 1;
}
finout.close();
if(!finout.good()) {
cout << "Error occurred while closing the file.\n";
return 1;
}
return 0;
}
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