CDE

Task/Empty-string/C/empty-string.c

@@ -0,0 +1,10 @@
+/* assign an empty string */
+const char *str = "";
+/* to test a null string */
+if (str) { ... }
+/* to test if string is empty */
+if (str[0] == '\0') { ... }
+/* or equivalently use strlen function */
+if (strlen(str) == 0) { ... }
+/* or compare to a known empty string, same thing. "== 0" means strings are equal */
+if (strcmp(str, "") == 0) { ... }