reading hex value from .txt file and storing it into unsigned char array[ ]

Question

I have a txt file, content of file is :

0x1a,0x2b,0xff,0x99,0x55

I need to store all this value into :

unsigned char tempArray[10]={0xaa,0xbb,0xcc,0xdd,0xee,0x00,0x00,0x00,0x00,0x00}.

is there any solution so that my :

tempArray[]= {0xaa,0xbb,0xcc,0xdd,0xee,0x1a,0x2b,0xff,0x99,0x55}.

need to store values from .text file into specific location of array USING c / cpp only.

Thanking you in anticipation of favorable replies. :)

EDIT

'till now i am reading 1.txt file character by character. variable ch store the the curent value, i am trying to store the ch value to ch2* later copy to array.

Te code below works fine for reading value but shows segmentation fault when ch2 came in picture.

unsigned char tempArray[10]={0xaa,0xbb,0xcc,0xdd,0xee,0x00,0x00,0x00,0x00,0x00};

int main()
{
    char ch,i=0;

    FILE *fp;

    char *ch2=NULL;

    fp = fopen("1.txt","r"); // read mode

    if( fp == NULL )
    {
        printf("err");

        return 0;
    }

    printf("The contents of file are :\n");

    while(( ch = fgetc(fp)) != EOF )
    {
        if(ch==',')
        {
            printf(" ");
        }
        else
        {
            printf("%c",ch);

            //sprintf(ch2,"%c",ch2);

            //printf("\tch2 :: %s",ch2);
        }

    }

    i++;

    fclose(fp);

    return 0;
}

Answer 1

Using your code you can simply code:

uint32_t index = 0;

while(( ch = fgetc(fp)) != EOF )
{
    if(ch==',')
    {
        printf(" ");
    }
    else
    {
        printf("%c",ch);

        tempArray[index] = ch;

        if ( tempArray < (sizeof(tempArray)/sizeof(tempArray[0])) )
        {
            index++;
        }
    }
}

The segmentation fault you are seeing, I guess, is caused by

char *ch2=NULL;

After that you must allocate space where byte read will be placed. You can use malloc to do that.

char *ch2=malloc(size_of_you_buffer*sizeof(unsigned char);

Where size_of_you_buffer must be set accordingly to your needs.

Answer 2

unsigned char tempArray[]=
{
#include "file.txt"
};