1 files changed, 53 insertions, 0 deletions
diff --git a/class.c b/class.c
new file mode 100644
index 0000000..dda044a
--- /dev/null
+++ b/class.c
@@ -0,0 +1,53 @@
+#include <stdio.h>
+
+void printS(char *str)
+{
+    puts(str);
+}
+
+void printF(float *f)
+{
+    printf("%f\n", f);
+}
+
+struct GLFrame
+{
+    int x, y, z;
+    void (*func1)(char *);
+    void (*func2)(struct GLFrame *, int *, int *, int *);
+};
+
+void modPos(struct GLFrame *frame, int *x, int *y, int *z)
+{
+    frame->x = *x;
+    frame->y = *y;
+    frame->z = *z;
+}
+
+struct GLFrame frame = {
+    .x = 5,
+    .y = 6,
+    .z = 7,
+    .func1 = printS,
+    .func2 = modPos
+};
+
+int main(void)
+{
+#if 0
+    float x = 1.0f;
+    printf("x in hex: 0x%016x\n", x);
+#endif
+
+    int x, y, z;
+    x = y = z = 3;
+    /* i want to modify position vector, xyz */
+    frame.func2(&frame, &x, &y, &z);
+
+    printf("x is: %d\ny is: %d\nz is: %d\n", frame.x, frame.y, frame.z);
+
+    puts("Hello");
+
+    return 0;
+}
+