Completed and improved ex1_10 using a switch function.

KNR C/ex1_10_improved.c

@@ -0,0 +1,30 @@
+#include <stdio.h>
+
+/*Alternative (challenge) implementation of exercise 1-10 using a switch statement
+ * as opposed to a series of if statements*/
+
+int main(){
+int a = 0; /*Initializing a as zero; this doesn't matter because getchar is called at the top of the loop */
+
+	while (a != EOF){
+
+		a = getchar();
+		
+		switch (a){
+			case '\t':
+				printf ("\\t");
+				break;
+			case '\\':
+				printf ("\\\\");
+				break;
+			case '\b':
+				printf ("\\b");
+				break;
+			case EOF: /*Required case for checking if a is EOF, since the loop actually tests whether a = EOF before refreshing a, thus allowing us to enter the loop with the value of a set to EOF */
+				break;
+			default:
+				putchar (a);
+		}
+	}
+	return 0;
+}