move exercises and lectures into subfolders

Lectures/LC12/Global3/global_ex3.c

@@ -0,0 +1,57 @@
+/* 
+
+	This time we have a real problem. We are using the variable 
+	'i' in the main loop to count and again in the function. 
+
+	Thus the function will change the value seen by the 'main'
+	routine - and will cause *Serious* problems
+
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int i; /* Again, the nasty global variable */
+
+/* 
+
+       This function returns the sum of the number 0 -> i, but
+       summing from the limit back to zero ( to prove a point ! )
+
+       The problem this will cause is that at the end of the routine
+       the value of 'i' will always be '1' which will stop the loop    
+       in 'main' working !
+
+*/
+
+
+int SumToValue ( int Limit )
+{
+
+	int Result = 0;
+	
+       printf("\nIn function ");
+
+	for ( i = Limit ; i > 0 ; i-- )
+		Result = Result + i;
+
+	return Result;
+}
+
+/* 
+   This is our main function - this time we are aiming to print out
+   at table of the sums of values from 1 to 10 
+*/
+
+
+int main( void )
+{
+
+	for ( i =  0 ; i < 10 ; i++ )
+	{
+		printf ("\nThe sum of the values 0 to %d is %d ",i,SumToValue(i));
+	}
+
+	return 0;
+}
+