upgrade

SelfEducation/Task/T4/swap/func.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+void swap(int *px, int *py)
+{
+    int t;
+
+    t = *px;
+    *px = *py;
+    *py = t;
+
+    return;
+}

SelfEducation/Task/T4/swap/main.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+void swap(int *px, int *py);
+
+int main()
+{
+    int x, y;
+    scanf("%d%d", &x, &y);
+
+    swap(&x, &y);
+
+    printf("%d %d\n", x, y);
+    return 0;
+}