finding numbers in text files

HI guys,

Can anyone tell me how to find and delete numbers from a text file. This is what I have so far

Code:

---

int main(){
    char c, filename[10]; FILE *fp;
        printf("Eneter a filename");
        scanf("%s", filename);
          if((fp=fopen(filename, "r")) !=NULL)
              while ((c=fgetc(fp)) !=EOF)
                        fputc(c, stdout);
          else
                  printf("could not open file ", filename);
char Regex;

char regMatch[] = " ";//string to search for inside of text file. It is case sensitive.
            if (Regex.IsMatch(filename,regMatch))//If the match is found in allRead
            {
                printf("found\n");

            }
            else
            {
                printf("not found\n");
            }
}

---

Your use of Regex.IsMatch is incompatible with the code being C. You should check whichever flavor of regex you're using to see what it calls 'digit'.

For starters doclarify what you mean by Regex.IsMatch?
RTM on regcomp(), esp. how-to use rm_so and rm_eo.

And I suppose I should mention, if RegEx comes crashing down around your ears, that there is such a thing as isdigit().