CcodeTemplates

//========reading a complete binary file========
#include            <iostream>
#include            <fstream>
using             namespace std;
                  ifstream::pos_type size;
char *              memblock;
int                 main ()
{ int               i ,j , h, l , z , m, s;
ifstream          file ("/Users/donsauer/Desktop/cmdtests/3N45E007.hgt", ios::in|ios::binary|ios::ate);
ofstream          myfile ("/Users/donsauer/Desktop/1.txt");
if                (file.is_open())
{ size =            file.tellg();
cout              << " file size is " << size ;
memblock =        new char [size];
                    file.seekg (0, ios::beg);
                    file.read (memblock, size);
                    file.close();
cout              << " the complete file content is in memory \n" ;
s=                3;
m =               1201*s ;   // 7200 points per row   file 25934402 is 3602X7200
m =               3601;
for               (j=0; j< 180*2; j=j+4)
{ for               (i=2250; i< 2460; i=i+2)
{ h =               (int) memblock[ 2*i +m*j];
if                ( h < 0 ) h=h+256;
l =               (int) memblock[2*i+1 +m*j];
if                ( l < 0 ) l=l+256;
z =               (256*h +l)-2000;
myfile            << z << " " ;
} myfile            << "\n" ;
}                   myfile.close()
delete[]          memblock;
} else cout         << "Unable to open file";
return            0;
}

//========reading a complete text file========

#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main () {
string line;
ifstream myfile ("/Users/donsauer/Desktop/zzzz/cmdtests/example.txt");
if (myfile.is_open())
{
while (! myfile.eof() )
{
getline (myfile,line);
cout << line << endl;
}
myfile.close();
}
else cout << "Unable to open file";
return 0;
}

//========write a complete text file========

#include           <iostream>
#include           <fstream>
using              namespace std;

int                main (int argc, char * const argv[])
{ ofstream         myfile ("/Users/donsauer/Desktop/cmdtests/example.txt");
if              (myfile.is_open())
{ myfile           << "This is a line.\n";
myfile           << "This is another line.\n";
                   myfile.close();
} else cout        << "Unable to open file";
return           0;
std::cout        << "Hello, World!\n"; // insert code here...
return 0;
}

//========obtain file size========

// obtaining file size
#include            <iostream>
#include            <fstream>
using               namespace std;
int                 main ()
{ long              begin,end;
ifstream          myfile ("/Users/donsauer/Desktop/cmdtests/example.txt");
begin =           myfile.tellg();
                    myfile.seekg (0, ios::end);
end =             myfile.tellg();
                    myfile.close();
cout              << "size is: " << (end-begin) << " bytes.\n";
return            0;
}