initial commit

c/resistor-color/src/resistor_color.c

@@ -0,0 +1,44 @@
+#include "resistor_color.h"
+
+/* V1: initial version
+ * V2: add error code in enum
+ */
+static resistor_band_t mapping[]={
+    BLACK,
+    BROWN,
+    RED,
+    ORANGE,
+    YELLOW,
+    GREEN,
+    BLUE,
+    VIOLET,
+    GREY,
+    WHITE,
+    ERROR
+};
+
+resistor_band_t color_code(resistor_band_t color)
+{
+    return color>=BLACK && color<=WHITE? color: ERROR;
+}
+
+resistor_band_t *colors()
+{
+    return mapping;
+}
+
+#ifdef UNIT_TEST
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int ac, char **av)
+{
+    int arg=1, n;
+
+    for (; arg<ac; ++arg) {
+        n=atoi(av[arg]);
+        printf("color(%d)=%d\n", n, color_code(n));
+    }
+
+}
+#endif

c/resistor-color/src/resistor_color.h

@@ -0,0 +1,26 @@
+#ifndef RESISTOR_COLOR_H
+#define RESISTOR_COLOR_H
+
+typedef enum {
+    BLACK=0,
+    BROWN,
+    RED,
+    ORANGE,
+    YELLOW,
+    GREEN,
+    BLUE,
+    VIOLET,
+    GREY,
+    WHITE,
+    ERROR=-1,
+} resistor_band_t;
+
+extern resistor_band_t color_code(resistor_band_t);
+extern resistor_band_t *colors();
+
+#ifdef TESTALL
+#undef  TEST_IGNORE
+#define TEST_IGNORE() {}
+#endif
+
+#endif