- #include <iostream.h>
- #include <fstream.h>
- #include <stdlib.h>
- void main(int argc, char *argv[])
- {
- if(argc!=4)
- {
- cout << "Usage: change <filename> <byte> <character>" << endl;
- exit (1);
- }
- fstream out(argv[1], ios::in | ios::out | ios::binary);
- if(!out)
- {
- cout << "Cannot open file!";
- exit (1);
- }
- out.seekp(atoi(argv[2]), ios::beg);
- out.put(*argv[3]);
- out.close();
- }
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