C Programming: Reading integers from text file until the end of a line: I need h

Question

C Programming: Reading integers from text file until the end of a line:

I need help understanding on how to read integers from a text file until the end of its line, and then holding them in a hashtable where each line can be checked if theirs a duplicate.

Example:

0x7f1a9804ae19

0x7f1a9804ae1c

0x7f1a9804ae1c

0x7f1a9804ae1c

Output:

2

I have used fgetc which gets only reads until the end of the string, but I cannot read the integers. I need to read the integers so that I am able to store in Hashtable.

Heres a sample of my code that I worked on:

int main(int argc, char** argv)
{
FILE *fp;
char ch[60];
int table[100];
   int counter = 0;
int num;
   int j = 0;
   int i = 0;
long size;
   int n;
      
if (argc != 2)
{
printf("error ");
return 0;
}
  
   if ((fp = fopen(argv[1], "rt")) == NULL){
       printf("0 ");
       return 0;
   }

fp = fopen(argv[1],"rt");

while((num = fgetc(fp)) != EOF){
       if(fgets(ch, 60, fp) != NULL){
           puts(ch);
           n = atoi(ch);
           printf("%d ",n);
       }

fclose(fp);

return 0;

}

Explanation / Answer

Use fgets() to read a full line, then parse the line (possibly with strtol()).

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