made examples/demos for vectors && files && lists | also fixed a bug with the vector and list size and popping, explained in the adjacent comment

examples/file/filedemo.c

@@ -0,0 +1,21 @@
+#include <odweta/file.h>
+#include <stdio.h>
+
+int main() {
+    printf("creating a file using 'fileInit(<filename>)' (returns a file_t*)\n");
+    file_t* f = fileInit("test.txt");
+
+    printf("printing the file contents\n\n");
+    filePrint(f);
+
+    printf("\nconvering the file contents into a string (char*)\n");
+    char* string = fileToString(f);
+    printf("\"%s\"\n", string);
+
+    // TODO -> writing, clearing
+
+    printf("if you are finished working with the file BEFORE the immediate end of the program, run 'fileCleanup(file_t*)', otherwise it is not strictly necessary\n");
+    fileCleanup(f);
+
+    return 0;
+}

examples/file/test.txt

@@ -0,0 +1,6 @@
+this !1@#%
+is a big
+mega such large
+
+test
+and

examples/list/listdemo.c

@@ -0,0 +1,21 @@
+#include <odweta/list.h>
+#include <stdio.h>
+
+int main() {
+    printf("creating a list using 'listInit()' (returns a list_t*)\n");
+    list_t* l = listInit();
+
+    printf("pushing an integer value into the list\nnote the kind of unusual way of passing the number argument: if you want to pass an expression (e.g. the value '1' or '4*4'), something not stored in a variable, you follow this syntax - &(type){value} (e.g. &(int){1 + 1})\nalso, the type of the variable must be given as the second argument to the function\n->'listPush(list_t*, INT, &(int){123})'\n");
+    listPush(l, INT, &(int){123});
+    listPrint(l);
+
+    printf("popping the last value of the list; in this case, it is an integer, so you type: 'int poppedValue = *((int *)listPop(list_t*))'\n");
+    int poppedValue = *((int *)listPop(l));
+	printf("popped: %d\n", poppedValue);
+    listPrint(l);
+
+    printf("if you are finished working with the list BEFORE the immediate end of the program, run 'listCleanup(list_t*)', otherwise it is not strictly necessary\n");
+    listCleanup(l);
+
+    return 0;
+}

examples/vector/vectordemo.c

@@ -0,0 +1,21 @@
+#include <odweta/vector.h>
+#include <stdio.h>
+
+int main() {
+    printf("creating a vector using 'vectorInit(<type>)' (returns a vector_t*)\npossible type are: INT, FLOAT, CHAR, VECTOR (LIST in the future)\n");
+    vector_t* v = vectorInit(INT);
+
+    printf("pushing an integer value into the vector\nnote the kind of unusual way of passing the number argument: if you want to pass an expression (e.g. the value '1' or '4*4'), something not stored in a variable, you follow this syntax - &(type){value} (e.g. &(int){1 + 1})\n->'vectorPush(vector_t*, &(int){123})'\n");
+    vectorPush(v, &(int){123});
+    vectorPrint(v);
+
+    printf("popping the last value of the vector; in this case, it is an integer, so you type: 'int poppedValue = *((int *)vectorPop(vector_t*))'\n");
+    int poppedValue = *((int *)vectorPop(v));
+	printf("popped: %d\n", poppedValue);
+    vectorPrint(v);
+
+    printf("if you are finished working with the vector BEFORE the immediate end of the program, run 'vectorCleanup(vector_t*)', otherwise it is not strictly necessary\n");
+    vectorCleanup(v);
+
+    return 0;
+}