1 files changed, 23 insertions, 0 deletions
diff --git a/rtrailws.c b/rtrailws.c
new file mode 100644
index 0000000..a1d1956
--- /dev/null
+++ b/rtrailws.c
@@ -0,0 +1,23 @@
+// Remove trailing whitespace.
+#include<stdio.h>
+
+int main (int argc, char *argv[]) {
+    char c;
+    int spacecount = 0;
+    while ( (c = getchar()) != EOF ) {
+        if (c == ' ') {
+            spacecount++;
+        } else if (c == '\n' && spacecount) {
+            putchar('\n');
+            spacecount = 0;
+        } else {
+            if (spacecount) {
+                int i;
+                for (i = 0; i < spacecount; i++)
+                    putchar(' ');
+                spacecount = 0;
+            }
+            putchar(c);
+        }
+    }
+}