add `cco` macro, block style coroutine definition, to replace cco_begin(co) && cco_end()

1 files changed, 3 insertions, 2 deletions

diff --git a/misc/examples/coread.c b/misc/examples/coread.c
index e60fb31c..1976231f 100644
--- a/misc/examples/coread.c
+++ b/misc/examples/coread.c
@@ -13,7 +13,7 @@ struct file_read {
 
 void file_read(struct file_read* g)
 {
-    cco_begin(g)
+    cco(g) {
         g->fp = fopen(g->filename, "r");
         g->line = cstr_init();
 
@@ -23,7 +23,8 @@ void file_read(struct file_read* g)
         printf("finish\n");
         cstr_drop(&g->line);
         fclose(g->fp);
-    cco_end();
+    }
+    return;
 }
 
 int main(void)