initial commitHEADmaster

1 files changed, 50 insertions, 0 deletions

diff --git a/main_dyn.c b/main_dyn.c
new file mode 100644
index 0000000..267b7f5
--- /dev/null
+++ b/main_dyn.c
@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+struct va {
+  int n;
+  int nmax;
+  int *data;
+};
+
+void create_array(struct va *va, int nmax) {
+  va->n = 0;
+  va->nmax = nmax;
+  va->data = (int *) malloc(nmax * sizeof(int));
+  if(va->data == NULL)
+    // no space left to allocate data...
+    return;
+}
+
+void init_array(struct va *va, int n, int *src) {
+  if(n > va->nmax)
+    return;
+  va->n = n;
+  memcpy(va->data, src, n*sizeof(int));
+}
+
+void free_array(struct va *va) {
+  if(va->data)
+    free(va->data);
+  va->nmax = 0;
+  va->n = 0;
+  va->data = NULL;
+}
+
+int main(int argc, char *argv[]) {
+  struct va va;
+  int t[5] = {1,2,3,4,5};
+  int i;
+
+  create_array(&va, 12);
+  init_array(&va, 5, t);
+
+  for(i = 0; i < va.n; ++i) {
+    printf("%d\n", va.data[i]);
+  }
+
+  free_array(&va);
+
+  return 0;
+}