diff options
Diffstat (limited to 'stdio-common/tst-ungetc.c')
| -rw-r--r-- | stdio-common/tst-ungetc.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/stdio-common/tst-ungetc.c b/stdio-common/tst-ungetc.c index ba74a84f7f..08819b7765 100644 --- a/stdio-common/tst-ungetc.c +++ b/stdio-common/tst-ungetc.c @@ -22,17 +22,24 @@ main (int argc, char *argv[]) name = tmpnam (NULL); fp = fopen (name, "w"); assert (fp != NULL) - fputs ("bl", fp); + fputs ("bla", fp); fclose (fp); fp = NULL; fp = fopen (name, "r"); - assert (fp != NULL) - assert (getc (fp) != EOF); - assert ((c = getc (fp)) != EOF); + assert (fp != NULL); + assert (ungetc ('z', fp) == 'z'); + assert (getc (fp) == 'z'); + assert (getc (fp) == 'b'); + assert (getc (fp) == 'l'); + assert (ungetc ('m', fp) == 'm'); + assert (getc (fp) == 'm'); + assert ((c = getc (fp)) == 'a'); assert (getc (fp) == EOF); assert (ungetc (c, fp) == c); assert (feof (fp) == 0); + assert (getc (fp) == c); + assert (getc (fp) == EOF); the_end: if (fp != NULL) |