Import official C23 code examples for Modern C (Jens Gustedt, 2024)HEADupstream-importmain

- Add official C source files, Makefile, c23-fallback.h, and LICENSE
- Update README.md with study mirror notice

1 files changed, 10 insertions, 0 deletions

diff --git a/sequence_point.c b/sequence_point.c
new file mode 100644
index 0000000..6048cb6
--- /dev/null
+++ b/sequence_point.c
@@ -0,0 +1,10 @@
+#include<stdio.h>
+
+unsigned add(unsigned* x, unsigned const* y) [[unsequenced]] {
+  return *x += *y;
+}
+int main(void) {
+  unsigned a = 3;
+  unsigned b = 5; 
+  printf("a = %u, b = %u\n", add(&a, &b), add(&b, &a));
+}