HexDump Programm....

Hello every one.... can you help me out here...
I need to make 2 programms.. on C and other same C++

I need to make a programms that read binary file (like txt file) and produce a hexadecimal dump of that file.

output should look like this (out put should be stored in new txt file)

http://img239.imageshack.us/img239/9...titled1ua6.jpg

Also command line should be used to get the name of data file. and then program will use a lookup table to convert the binary byte to a hex character. Using printf is disallowed.

Here is C programm.... but I have few problems..
First.. how do I open file in C, using console entry?... (I got this workng in C++ but not in C)
This programm just drive me nuts...

Code:

---

#include <stdio.h>
int main(int argc,char* argv[])
{
        FILE* fileHandle;
        if (argc != 2)
        {
                printf("Usage: hexdump <file name>\n");
                return -1;
        }
        fileHandle = fopen(argv[1], "rb");
        if (!fileHandle)
        {
                printf("Error: failed to open file %s for read", argv[1]);
                return -1;
        }
        /* dump data here */
        fclose(fileHandle);
        return 0;
}
unsigned char lower(unsigned char c)
{
        unsigned char one_byte;
        one_byte = c & 0x0F;
        return one_byte;
}
unsigned char upper(unsigned char c)
{
        unsigned char one_byte;
        one_byte = (c & 0xF0) >> 4;
        return one_byte;
}

---

http://www.daniweb.com/code/snippet488.html

is there any C++ exemples?

In C++ I was able to open file.. and write some to it.. but.. how do I change it to hex?

Here what I did in C++

Quote:

---

int main()
{

string fileName;
ifstream inData;
ofstream outData;
cout << "Enter the input file name: ";
cin >> fileName;
inData.open(fileName.c_str());
outData.open("name1.txt");
}

---

That file enty part...


Here is how I can write some thing using original file content.. and change it and write it to new file...

Quote:

---

string socialNum;
string firstName;
string lastName;
string middleName;
string initial;



inData >> socialNum >> firstName >> middleName >> lastName;

initial = middleName.substr(0, 1) + '.';


outData << firstName << ' ' << middleName << ' ' << lastName
<< ' ' << socialNum << endl;
outData << lastName << ", " << firstName << ' ' << middleName
<< ' ' << socialNum << endl;
outData << lastName << ", " << firstName << ' ' << initial
<< ' ' << socialNum << endl;
outData << firstName << ' ' << initial << ' ' << lastName;

inData.close();
outData.close();
return 0;

---

But now... How do I use hex table to get data file in to hex..

Quote:

---

}
unsigned char lower(unsigned char c)
{
unsigned char one_byte;
one_byte = c & 0x0F;
return one_byte;
}
unsigned char upper(unsigned char c)
{
unsigned char one_byte;
one_byte = (c & 0xF0) >> 4;
return one_byte;
}

---

Uh, show something relevant? Your posts have absolutely nothing to do with an attempt at coding this yourself in either language. Kick me in the teeth for a gift and then ask for me to give you more? Good luck.

Resumed here - http://cboard.cprogramming.com/showthread.php?t=83720