pr19010.cpp

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// File Name: pr19010.cpp
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#include <fstream>
#include <cctype>

int main()
{
    char* fname = "test.dat";

    // Read the file into an array.
    std::ifstream tfile(fname, std::ios::in |
        std::ios::out | std::ios::binary);
    std::ostream ofile(tfile.rdbuf());
    char tdata[100];
    int i = 0;
    while (!tfile.eof() && i < sizeof tdata)
        tfile.get(tdata[i++]);

    // Write the array to the file.
    ofile.seekp(0, ios::end);
    ofile << "\r\n";
    for (int j = 0; j < i-1; j++)
        ofile.put(static_cast<char>(toupper(tdata[j])));

    return 0;
}