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Thread: Conversion from c to c++

  1. #1
    Join Date
    Jun 2011
    Posts
    8

    Conversion from c to c++

    Hey guys, I'm currently trying to convert a code from c to c++. I have corrected a few things, but I am now stuck. I tried compiling and I am getting errors. Btw I am using g++ compiler in terminal in linux.
    the errors I am getting are:
    audio_backup.cpp:**:24: warning: deprecated conversion from string constant to ‘char*’
    audio_backup.cpp: In function ‘int generate_sine(const snd_pcm_channel_area_t*, snd_pcm_uframes_t, int, double*)’:
    audio_backup.cpp:5*:76: error: invalid operands of types ‘unsigned int’ and ‘const char [2]’ to binary ‘operator<<’

    I'm not sure what this means. Can any one help me please?
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  2. #2
    Join Date
    Aug 2011
    Posts
    3

    Thumbs up

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  3. #3
    Join Date
    Aug 2011
    Posts
    3
    Hey everybody,
    I was having trouble completing my last assignment which required me to redesign a C program into a C++ program using classes and objects.
    So far my Cpp code looks like this:
    insert
    Code:
    class Ciphertext{
    public:
    void output_ciphertext_screen(struct key_element key[26], FILE * fp);
    };


    fprintf(fp,"\n");
    fprintf(fp,"Encoded : ");
    for(i=0;i<26;i++)
    fprintf(fp,"%c ",key[i].enc);
    fprintf(fp,"\n");
    fprintf(fp,"Decoded : ");
    for(i=0;i<26;i++)
    if(key[i].man_flag == 0)
    fprintf(fp,"%c ",key[i].dec);
    else
    if(fp==stdout)
    printf("%c ",toupper(key[i].dec));
    else
    fprintf(fp,"%c ",key[i].dec);
    fprintf(fp,"\n\n");

    }

    int main()
    {

    output_ciphertext_screen print(key, stdout);
    }
    This code is supposed to take a ciphertext line by line from a file and output it onto the screen using C++. Basically, all I did was take the function I had earlier that is supposed to perform this operation and copied it into the object above. But, after compiling, I am getting errors saying:
    error C2065: 'output_ciphertext_screen' : undeclared identifier.
    I am new to C++ and am trying to get a better grasp of it so if you could point me in the right direction by showing me where my code is wrong or just giving me some tips, I should be able to figure out the rest of the program.




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  4. #4
    Join Date
    Aug 2011
    Posts
    2
    still cant figure out how to deal with malloc and calloc in c++ , any help?
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  5. #5
    Join Date
    Aug 2011
    Posts
    1

    Smile Conversion from c to c++

    This is good work to convert from C to C++. C++ is often considered to be a superset of C. Most C code can easily be made to compile correctly in C++.
    Last edited by gordo; 09-03-2011 at 08:13 AM.

  6. #6
    Join Date
    Jun 2012
    Posts
    12
    Converting a C or C++ nature for a project. Use the Convert to a C/C++ Project wizard to assign a C nature to a C++ project or vice versa.
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