Initial commit

kapitel8/digit-test.c

@@ -0,0 +1,11 @@
+#include <stdio.h>
+#include <ctype.h>
+
+int main(void)
+{
+    char chr1 = '9';
+    char chr2 = 'a';
+    printf("chr1: %d\n", isdigit(chr1));
+    printf("chr2: %d\n", isdigit(chr2));
+    return 0;
+}