[cpp] Update pthread learning

语言相关/cpp基础入门/pthread.cpp

@@ -0,0 +1,30 @@
+#include <cstdlib>
+#include <iostream>
+#include <pthread.h>
+
+using namespace std;
+
+#define NUM_THREAD 5
+
+void *printHello(void *threadid) {
+  long tid;
+  tid = (long)threadid;
+  cout << "Hello World! Thread ID, " << tid << endl;
+  pthread_exit(NULL);
+}
+
+int main() {
+  pthread_t threads[NUM_THREAD];
+  int rc;
+  int i;
+  for (i = 0; i < NUM_THREAD; i++) {
+    cout << "main() : creating thread, " << i << endl;
+    rc = pthread_create(&threads[i], NULL, printHello, (void *)i);
+
+    if (rc) {
+      cout << "Error:unable to create thread," << rc << endl;
+      exit(-1);
+    }
+  }
+  return 0;
+}