generic programming example added for RAII in C

array.h

@@ -0,0 +1,15 @@
+#include <stdlib.h>
+#include "handle.h"
+
+/* Generic array macro */
+#define Array(T,AT) struct AT { \
+	size_t count; \
+	T *v; \
+}; handle(AT) { \
+	if(state == HANDLE_CREAT) { \
+		self->count = *(size_t*) data; \
+		self->v = (T*) calloc(self->count, sizeof(T)); \
+	} else if (state == HANDLE_DESTR){ \
+		if(self->v) free(self->v); \
+	} \
+}

array_handle_gen_test.c

@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include "array.h"
+
+/* Prepare usage for 64 bit arrays - adds "Array_uint64" for creat */
+Array(uint64_t, Array_uint64);
+
+int main() {
+	int n;
+	printf("Number of elements to sum: ");
+	scanf(" %d", &n);
+	/* Create a 64 bit array of 'n' elements */
+	creat(Array_uint64, data, &n);
+	// printf("vektor.count:%d\n", data.count);
+
+	for(int i = 0; i < data.count; ++i) {
+		scanf(" %d", &n);
+		data.v[i] = n;
+	}
+	n = 0; for(int i = 0; i < data.count; ++i) n += data.v[i];
+	printf("Sum: %d\n", n);
+
+	// RAII releases array here automagicaly!
+	return 0;
+}

makefile

@@ -9,7 +9,11 @@ gcc:
 	g++ raii_test.cpp -o raii_test_cpp
 	gcc handle_test.c -o handle_test
 	gcc array_handle_test.c -o array_handle_test
-	g++ array_handle_test.c -o array_handle_test_gpp
+	g++ array_handle_test.c -o array_handle_test_cpp
+	gcc array_test.c -o array_test
+	g++ array_test.c -o array_test_cpp
+	gcc array_handle_gen_test.c -o array_handle_gen_test
+	g++ array_handle_gen_test.c -o array_handle_gen_test_cpp
 clang:
 	clang macroname.c -o macroname
 	clang count.c -o count
@@ -18,5 +22,6 @@ clang:
 	clang construct_destruct.c -o construct_destruct
 	# clang raii_test.c -o raii_test # should not work
 	clang++ raii_test.cpp -o raii_test_cpp
+	clang++ array_handle_gen_test.c -o array_handle_gen_test_cpp
 expand:
 	gcc -E handle_test.c -o handle_test_expanded.c