Cannot compare string read from file and from keyboard

Asked May 16 '16 at 14:37

Active May 16 '16 at 14:51

Viewed 34 times

Same as the title, i have a file with this format. First i read the number and then the string. The problem is i cannot compare str with the string s "ABCD", the strcmp function should return 0, it instead returns 1. And i also want to compare str with a string input from keyboard (s1), let say "ABCD" as well. Thanks in advance

void main()
{
    char s[] = "ABCD",str[100],s1[190];
    int i;
    FILE*fi;
    fi = fopen("fi.txt","r");
    fscanf(fi,"%d",&i);
    fgets(str,255,fi);
    scanf("%s",s1);
    printf("%d\n",strcmp(s,str));
    system("PAUSE");
    /*this is my fi.txt file: 
    1
    ABCD
    */
}

edited May 16 '16 at 14:43

asked May 16 '16 at 14:37

Michael

@user3078414 what do you mean? – Sourav Ghosh May 16 '16 at 14:41
1

@user3078414 No, the first line is a number, the 2nd line is the string – Michael May 16 '16 at 14:41
1

See [Removing trailing newline character from fgets() input](http://stackoverflow.com/q/2693776/2410359) – chux - Reinstate Monica May 16 '16 at 14:49
Why `255` with `char str[100]; fgets(str,255,fi);`? – chux - Reinstate Monica May 16 '16 at 14:51
Are you sure this is a duplicate? This problem described seems to be in the _leading_, not the trailing newline, staying in the `stdin` buffer since previous `fscanf()`, even before the `fgets()` getting called? – user3078414 May 16 '16 at 15:53

Cannot compare string read from file and from keyboard

0 Answers0