poll() function complete

Advanced_Technique/poll_func.c

@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <poll.h>
+
+int main(){
+
+    struct pollfd pfds[1]; // More if you want to monitor more
+
+    pfds[0].fd = 0;         //Standard input
+    pfds[0].events = POLLIN;// Tell me when ready to read
+
+    //  If you needed to monitor other things, as well:
+    // pfds[1].fd = some_socket; // Some socket descriptor
+    // pfds[1].events = POLLIN;  // Tell me when ready to read
+
+    printf("Hit RETURN or wait 2.5 seconds for timeout\n");
+
+    int num_events = poll(pfds, 1, 2500); // 2.5 second timeout
+ 
+    if(num_events == 0){
+        printf("Poll timed out!\n");
+    }
+    else{
+        int pollin_happened = pfds[0].revents & POLLIN;
+
+        if( pollin_happened ){
+            printf("File descriptor %d is ready to read\n", pfds[0].fd);
+        }
+        else{
+            printf("Unexpected event occured: %d\n", pfds[0].revents);
+        }
+    }
+    return 0;
+}