For sub

exercises/ex08/word_count.c

@@ -0,0 +1,59 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <glib.h>
+
+#define MAXCHAR 10000
+
+char* itoa(int num) {
+	char* str = malloc(sizeof(char) * MAXCHAR);
+	sprintf(str, "%d", num);
+	return str;
+}
+
+void updateHashtable(GHashTable* hash, char* key) {
+	char* val = g_hash_table_lookup(hash, key);
+	if (val == NULL) {
+		g_hash_table_insert(hash, key, "1");
+	} else {
+		int new_val = atoi(val) + 1;
+		g_hash_table_replace(hash, key, itoa(new_val));
+	}
+}
+
+GHashTable* createHashtable() {
+	GHashTable* hash = g_hash_table_new(g_str_hash, g_str_equal);
+	return hash;
+}
+
+void readFile(GHashTable* hash, char* fileName) {
+	FILE *f = fopen(fileName, "r");
+
+	if (f == NULL) {
+		printf("Could not open the given file: %s\n", fileName);
+		return;
+	}
+
+	char s[MAXCHAR];
+	while (fscanf(f, " %9999s", s) == 1) {
+		for (int i = 0; i < MAXCHAR; i++) {
+			s[i] = tolower(s[i]);
+		}
+		char* copy = g_strdup(s);
+		updateHashtable(hash, copy);
+	}
+}
+
+void printEntry(gpointer key, gpointer value, gpointer userdata) {
+	printf("%s : %s\n", key, value);
+}
+
+int main () {
+	GHashTable* hash = createHashtable();
+	readFile(hash, "pride_and_prejudice.txt");
+	printf("There are %d keys in the hash\n", g_hash_table_size(hash));
+	g_hash_table_foreach(hash, printEntry, NULL);
+	g_hash_table_destroy(hash);
+	return 0;
+}