Thread: ReadData txt file

Originally Posted by Salem

Nothing at all?
Not even your error message?

Works for me.

Code:

$ cat foo.c
#include <stdio.h>
int main()
{
    int v1, v2, v3;
    char line[BUFSIZ];
    FILE *file = fopen("foo.txt", "r");
    if (file != NULL)
    {
        /* or other suitable maximum line size */
        while (fgets(line, sizeof line, file) != NULL)
        {
            if (sscanf(line, "%d %d %d", &v1, &v2, &v3) == 3)
            {
                printf("V3 = %d %d %d\n", v1, v2, v3);
            } else if (sscanf(line, "%d %d", &v1, &v2) == 2) {
                printf("V2 = %d %d\n", v1, v2);      //!! WAS foo.c:16:24: warning: format ?%d? expects a matching ?int? argument [-Wformat=]
            } else if (sscanf(line, "%d", &v1) == 1) {
                printf("V1 = %d\n", v1);
            }
        }
    }
    else
        {
        printf("error file openning");
    }
    return 0;
}
$ cat foo.txt
60
4 1 4
607
4 5 6
3 1
4 2
$ gcc foo.c
$ ./a.out 
V1 = 60
V3 = 4 1 4
V1 = 607
V3 = 4 5 6
V2 = 3 1
V2 = 4 2

Yes, your 2nd printf was broken.

Are compiler messages preventing you from making a valid executable?

No; Im using compiler Clion (c99) does that matter?

It still not working; I guess my compiler not configuring "sscanf" function; what should I do?
What compiler are you using?