[BUG FIX] fix examples segment fault (nacos-group#148)

1. we should clear buffer before we use getchar
CedarBetty · Jan 22, 2025 · 8156c62 · 8156c62
1 parent 2b4104d
commit 8156c62
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diff --git a/examples/listenToKeys.cpp b/examples/listenToKeys.cpp
@@ -36,6 +36,8 @@ int main() {
     getchar();
     cout << "remove listener" << endl;
     n->removeListener("dqid", NULLSTR, theListener);//Cancel listening
+    int c;
+    while ((c = getchar()) != '\n' && c != EOF);
     getchar();
 
     return 0;

diff --git a/examples/subscribeServices.cpp b/examples/subscribeServices.cpp
@@ -40,11 +40,14 @@ int main() {
     n->registerInstance("ss", "127.0.0.1", 33);
     n->registerInstance("ss", "127.0.0.1", 34);
     cout << "Press any key to deregister services" << endl;
+    int c;
+    while ((c = getchar()) != '\n' && c != EOF);
     getchar();
 
     n->deregisterInstance("ss", "127.0.0.1", 33);
     n->deregisterInstance("ss", "127.0.0.1", 34);
     cout << "All instances Unregistered, press any key to finish testing" << endl;
+    while ((c = getchar()) != '\n' && c != EOF);
     getchar();
 
     return 0;