Read a CSV File from a Flash drive (Using C++, Ubuntu 12.04)

[robotarduino]

I want to read a file from my flash drive called text.csv. However, I cannot even open the port where my flash drive is connected. This is the code that I am using, but I get error since the first part. When I run the program it says "fopen Error". I am using Ubuntu 12.04. Please help.

#include<stdio.h>
#include<string.h>
 
#define SIZE 1
#define NUMELEM 5
 
int main(void)
{
    FILE* fd = NULL;
    char buff[100];
    memset(buff,0,sizeof(buff));
 
    fd = fopen("/dev/sdc/test.csv","r");
 
    if(NULL == fd)
    {
        printf("\n fopen() Error!!!\n");
        return 1;
    }
 
    printf("\n File opened successfully through fopen()\n");
 
    if(SIZE*NUMELEM != fread(buff,SIZE,NUMELEM,fd))
    {
        printf("\n fread() failed\n");
        return 1;
    }
 
    printf("\n Some bytes successfully read through fread()\n");
 
    printf("\n The bytes read are [%s]\n",buff);
 
    if(0 != fseek(fd,11,SEEK_CUR))
    {
        printf("\n fseek() failed\n");
        return 1;
    }
 
    printf("\n fseek() successful\n");
 
    if(SIZE*NUMELEM != fwrite(buff,SIZE,strlen(buff),fd))
    {
        printf("\n fwrite() failed\n");
        return 1;
    }
 
    printf("\n fwrite() successful, data written to text file\n");
 
    fclose(fd);
 
    printf("\n File stream closed through fclose()\n");
 
    return 0;
}

[Banfa]

Plug in your USB device and use ls in a command prompt to locate it. From memory (and because I can't be bothered to switch on my second computer) USB flash drives are not mounted on /dev but on /media