A01633305-Actividad 3.2. Gramáticas libres de contexto

labs/07/chatbot.l

@@ -0,0 +1,29 @@
+%{
+#include "y.tab.h"
+%}
+
+%%
+
+hello                       { return HELLO; }
+hi                          { return HELLO; }
+hey                         { return HELLO; }
+goodbye                     { return GOODBYE; }
+bye                         { return GOODBYE; }
+time                        { return TIME; }
+"what is the time"          { return TIME; }
+"what time is it"           { return TIME; }
+"what is your name"         { return NAME; }
+"name"			    { return NAME; }
+"your name"         	    { return NAME; }
+"what is the weather"       { return WEATHER; }
+"weather"                   { return WEATHER; }
+"how are you"               { return HOWAREYOU; }
+"mood"                      { return HOWAREYOU; }
+"flip coin"                 { return FLIP_COIN; }
+
+\n                          { return 0; }  /* End of input on newline */
+
+.                           { return yytext[0]; }
+
+%%
+

labs/07/chatbot.y

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+%{
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+void yyerror(const char *s);
+int yylex(void);
+%}
+
+%token HELLO GOODBYE TIME NAME WEATHER HOWAREYOU FLIP_COIN
+
+%%
+
+chatbot : greeting
+        | farewell
+        | query
+        | inquiry
+        | coinflip
+        ;
+
+greeting : HELLO { printf("Chatbot: Hello! How can I help you today?\n"); }
+         ;
+
+farewell : GOODBYE { printf("Chatbot: Goodbye! Have a great day!\n"); }
+         ;
+
+query : TIME { 
+            time_t now = time(NULL);
+            struct tm *local = localtime(&now);
+            printf("Chatbot: The current time is %02d:%02d.\n", local->tm_hour, local->tm_min);
+         }
+       ;
+
+inquiry : NAME { printf("Chatbot: My name is Jeff.\n"); }
+        | WEATHER { 
+            srand(time(NULL)); 
+            int temperature = 25 + rand() % 16; 
+            printf("Chatbot: The weather today is %d degrees Celsius outside.\n", temperature); 
+          }
+        | HOWAREYOU { 
+            srand(time(NULL));
+            const char *moods[] = {
+                "happy 😊",
+                "sad 😢",
+                "excited 😆",
+                "angry 😠",
+                "bored 😐",
+                "confused 😕",
+                "surprised 😮",
+                "tired 😴",
+                "scared 😱",
+                "calm 😌"
+            };
+            int moodIndex = rand() % 10;
+            printf("Chatbot: I'm feeling %s\n", moods[moodIndex]);
+          }
+        ;
+
+coinflip: FLIP_COIN {
+            srand(time(NULL));
+            int result = rand() % 2;
+            if (result == 0) {
+                printf("Chatbot: It's heads! 🪙\n");
+            } else {
+                printf("Chatbot: It's tails! 🪙\n");
+            }
+          }
+        ;
+
+%%
+
+int main() {
+    printf("Chatbot: Hi! You can greet me, ask for the time, ask my name, ask my mood, inquire about the weather, flip a coin, or say goodbye.\n");
+    while (yyparse() == 0) {
+        // Loop until end of input
+    }
+    return 0;
+}
+
+void yyerror(const char *s) {
+    fprintf(stderr, "Chatbot: I didn't understand that.\n");
+}
+