Solve Exercises 1-1 to 1-12

It was bugging me and the exercises are simple, so I pumped'em out.

1 files changed, 27 insertions, 0 deletions

diff --git a/1-09_single-spacing.c b/1-09_single-spacing.c
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--- /dev/null
+++ b/1-09_single-spacing.c
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+#include <stdio.h>
+
+/* The C Programming Language, 2nd Edition
+ *
+ * Exercise 1-9: Write a program to copy its input to its output, replacing each
+ * string of one or more blanks by a single blank.
+ *
+ * Answer: Run a loop with getchar() and check its value. If it's a space, count
+ * it, but prevent further spaces from being printed. Anything else should
+ * simply be spat out.
+ */
+
+int main(void) {
+	char c;
+	int spaces = 0;
+
+	while ((c = getchar()) != EOF) {
+		if (c == ' ' && spaces == 0) {
+			putchar(c);
+			spaces++;
+		} else {
+			putchar(c);
+		}
+	}
+
+	return 0;
+}