Fixed length records: Difference between revisions
Added C++ solution
SqrtNegInf (talk | contribs) m (→{{header|J}}: Fix comment: Perl 6 --> Raku) |
(Added C++ solution) |
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Line 88:
Line 9 RT MARGIN
aft:
8.........7.........6.........5.........4.........3.........2.........1...1 eniL
2 eniL
3 eniL
4 eniL
6 eniL
7 eniL
............................................................8 enil detnednI
NIGRAM TR 9 eniL
</pre>
=={{header|C++}}==
<lang cpp>#include <algorithm>
#include <cstdlib>
#include <fstream>
#include <iostream>
void reverse(std::istream& in, std::ostream& out) {
constexpr size_t record_length = 80;
char record[record_length];
while (in.read(record, record_length)) {
std::reverse(std::begin(record), std::end(record));
out.write(record, record_length);
}
}
int main(int argc, char** argv) {
std::ifstream in("infile.dat", std::ios_base::binary);
if (!in) {
std::cerr << "Cannot open input file\n";
return EXIT_FAILURE;
}
std::ofstream out("outfile.dat", std::ios_base::binary);
if (!out) {
std::cerr << "Cannot open output file\n";
return EXIT_FAILURE;
}
try {
in.exceptions(std::ios_base::badbit);
out.exceptions(std::ios_base::badbit);
reverse(in, out);
} catch (const std::exception& ex) {
std::cerr << "I/O error: " << ex.what() << '\n';
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}</lang>
{{out}}
After converting with dd:
<pre>
8.........7.........6.........5.........4.........3.........2.........1...1 eniL
2 eniL
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