simplify

echo/echo.c

@@ -1,25 +1,16 @@
+#include <stdio.h> /* NULL, fprintf(3), putc(3) */
+#include <stdlib.h> /* stdout */
 #include <sysexits.h> /* EX_OK */
-#include <stddef.h> /* NULL */
-#include <unistd.h> /* write(2) */
 
 int main(int argc, char **argv){
-	int i;
 
-	if(*argv == NULL)
-		goto blank;
-	
-	++argv;
-
-	while(--argc){
-		for(i = 0; argv[0][i] != '\0'; ++i);
-		write(1, *(argv++), i);
-		if(argc > 1)
-			write(1, " ", 1);
+	if(*argv == NULL || *++argv == NULL){
+		argc = 1;
+		putc('\n', stdout);
 	}
 
-blank:
-#ifndef PROMPT
-	write(1, "\n", 1);
-#endif
+	while(--argc)
+		fprintf(stdout, "%s%c", *(argv++), argc > 1 ? ' ' : '\n');
+
 	return EX_OK;
 }