First exercise updated

Author: bhhoffmannStud

Ex1/ex1_c

@@ -0,0 +1,34 @@
+#include <pthread.h>
+#include <stdio.h>
+
+int i = 0;
+
+
+void* inc(){
+    for(int j = 0; j < 1000000; j++){
+        i++;
+    }
+    return NULL;
+}
+
+void* dec(){
+    for (int j = 0; j < 1000000; j++){
+        i--;
+    }
+    return NULL;
+}
+
+int main(){
+      pthread_t thread_inc;
+      pthread_t thread_dec;
+
+      pthread_create(&thread_inc, NULL, inc, NULL);
+      pthread_create(&thread_dec, NULL, dec, NULL);
+
+      pthread_join(thread_inc, NULL);
+      pthread_join(thread_dec, NULL);
+
+      printf("Result: %d\n", i);
+
+      return 0;
+}

Ex1/ex1_c.c

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+	"time"
+)
+
+var i int = 0
+
+func inc(){
+	for j := 0; j < 1000000; j++ {
+    	i++
+    }
+}
+
+func dec(){
+	for j := 0; j < 1000000; j++ {
+    	i--
+    }
+}
+
+func main() {
+	runtime.GOMAXPROCS(runtime.NumCPU())
+
+	go inc()
+	go dec()
+
+	time.Sleep(100 * time.Millisecond)
+	fmt.Printf("Result: %d\n", i)
+}

Ex1/ex1_go.go

@@ -0,0 +1,24 @@
+from threading import Thread
+
+i = 0
+
+def thread_inc():
+    global i
+    for j in range(1000000):
+        i += 1
+
+def thread_dec():
+    global i
+    for p in range(1000000):
+        i -= 1
+
+def main():
+	inc = Thread(target = thread_inc, args = (),)
+	dec = Thread(target = thread_dec, args = (),)
+	inc.start()
+	dec.start()
+	inc.join()
+	dec.join()
+	print(i)
+
+main()