Initial commit of lecture code

LC19/union.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+union number{
+  double d;
+  float f;
+  long l;
+  int i;
+  short s;
+  unsigned char c[8];
+};
+
+int main(void)
+{
+  int my_i;
+  union number mynum;
+  printf ("\nPlease enter a number "); 
+  scanf("%d",&my_i);
+  printf ("\nThe bytes making up your number %d are ",my_i); 
+
+  mynum.i = my_i;
+  printf ("%d %d %d %d %d %d %d %d ",mynum.c[0],mynum.c[1],mynum.c[2],mynum.c[3],mynum.c[4],mynum.c[5],mynum.c[6],mynum.c[7]);
+
+  printf ("\nSize of double id %d ",sizeof(double));
+  printf ("\nSize of float id %d ",sizeof(float));
+  printf ("\nSize of long id %d ",sizeof(long));
+  printf ("\nSize of int id %d ",sizeof(int));
+  printf ("\nSize of short id %d ",sizeof(short));
+  return 0;
+
+}