Question

for some reason when running a program it refuses to enter a for loop, and rather just hangs.

main()
{      

    char *buffer;
    int chunk_offset, current_chunk_number, total_chunks;
    int filelen;

    filelen = ReadFileintoBuffer( buffer);  
        printf("file read \n");                             // error break point 1


    int events = filelen/eventlen;      // number of 512 + 2 32 bit events events with timecode

    int sp = 0;
    int i,j;
    int toterror[25];
    printf("file of length %d has %d events \n", filelen, events);
    printf(" i = %d \n", i);
    for( i = 0; i < events; i++)
    {
        printf("analyzed %d events of %d", i, events);
        sp=0;
        int error[13];

        Analyzeevent(buffer+i*eventlen, error);

        if(error[0])
        {
            sp = 12;
        }
        for( j =1; j < 13; j++)
        {
            toterror[j+sp] += error[j];
        }

    }
    printf("post for loop");
    Printerrs(toterror, events);
    exit(0);

}  

It prints everything down to i = (9727988 in this particular case), then nothing. it all just stops. any idea what happened? i learned c++ and programming in c is very strange and awkward for me right now. compiler doesnt throw up any warnings or anything

thank you for your help in advance.

edit: for ring0 heres the code to ReadFileintoBuffer:

int ReadFileintoBuffer( char *buffer)
{ 
    int filelen;
    char text[200];
    printf("Input File:  " );
    scanf( "%s" ,text);
    FILE *file = 0;

    int i;


    //Open file
    file = fopen(text, "rb");
    if (!file)
    {
            fprintf(stderr, "Unable to open file \n");
        exit(0);

    }

    //Get file length
    fseek(file, 0, SEEK_END);               // find the end of the file
    filelen=ftell(file);                    // set the current pointer (currently at end from above) as file length
    fseek(file, 0, SEEK_SET);               // set pointer back to beginning of file

    //Allocate memory
    buffer=(char *)malloc(filelen+1);
    if (!buffer)
    {
        fprintf(stderr, "Memory error! \n");
                                fclose(file);
        return;
    }

    //Read file contents into buffer
    fread(buffer, filelen, 1, file);
    fclose(file);                           // clse the file, all in buffer now
    return filelen;
}

Answer 1

You may be getting some buffering issues with printf. Try adding a \n to the print inside the for loop. (Like you have in some of the earlier prints)

It may be executing all the code but you aren’t seeing the printed result.