C / C++ Code Portfolio

if (!count)
{
cerr << "No files were specified\n";
exit(EXIT_FAILURE);
}
// dynamically allocate memory to store the information for each file to open
// if allocation fails, output an error message and exit
ifstream *files;
if ((files = new (nothrow) ifstream[count]) == NULL)
{
cerr << "Unable to allocate memory\n";
exit(EXIT_FAILURE);
}
// for each file to open...
for (int currentFile = 0; currentFile < (int)count; ++currentFile)
{
// open the file
files[currentFile].open(fileNames[currentFile]);
// if the file fails to open...
if (!files[currentFile].is_open())
{
// output an error message describing which file didn't open
cerr << "\"" << fileNames[currentFile] << "\": Failed to open\n";
// for each file that successfully opened before the file that failed to open...
for (; currentFile >= 0; --currentFile)
{
// close the file
files[currentFile].close();
}
// delete the file information allocated memory
delete files;
exit(EXIT_FAILURE);
}
}
return files;
}
// This function appends data from one file to the end of another file

#include

// AppendFile opens the file described by outFile and appends the file described by inFile to the end of it
int AppendFile(const char *inFile, const char *outFile)
{
FILE *fileToBeAppendedTo, *appendData;
// open the file to be appended to in write-only append mode
// open the file containing the data to append in read-only mode
if ((fileToBeAppendedTo = fopen(outFile, "ab")) == NULL)
{
// if file doesn't open for some reason, print an error message and quit
fprintf(stderr, "***ERROR*** AppendFile: Could not open outFile\n\n");
return -1;
}
else if ((appendData = fopen(inFile, "rb")) == NULL)
{
// if file doesn't open for some reason, print an error message and quit
fprintf(stderr, "***ERROR*** AppendFile: Could not open inFile\n\n");
fclose(fileToBeAppendedTo);