UNFINISHED

Lezione 8.1/main.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef Data int;
+
+typedef struct ListHead {
+    struct ListHead *next;
+    Data data;
+} ListHead;
+
+typedef ListHead *Link;
+
+Link list_new_raw(void) {
+    return malloc(sizeof(ListHead));
+}
+
+typedef enum { HEAD, TAIL } Mode;
+typedef enum { ITER, RECUR } Process;
+
+void usage() {
+   fprintf(stderr, "%s", "<prog_name> <n> <h/t> <i/r>\n");
+}
+
+int main(int argc, char *argv[]) {
+    if (argc < 4) {
+        usage();
+        return EXIT_FAILURE;
+    }
+
+    char *end;
+    size_t n = strtol(argv[1], &end, 10);
+    if (!end) {
+        usage();
+        return EXIT_FAILURE;
+    }
+
+    Mode mode;
+    if (strcmp(argv[2], "h") == 0) {
+        mode = HEAD;
+    } else if (strcmp(argv[2], "t") == 0) {
+        mode = TAIL;
+    } else {
+        usage();
+        return EXIT_FAILURE;
+    }
+
+    Process process;
+    if (strcmp(argv[3], "i") == 0) {
+        process = ITER;
+    } else if (strcmp(argv[3], "r") == 0) {
+        process = RECUR;
+    } else {
+        usage();
+        return EXIT_FAILURE;
+    }
+
+    srand(time(NULL));
+}