more cleaning

streq/streq.c

@@ -0,0 +1,27 @@
+#include <sysexits.h>
+#include <unistd.h>
+#include "libio.h"
+
+static char *program_name = "streq";
+
+int main(int argc, char *argv[]){
+	int i;
+	int j;
+
+	if(argc < 3){
+		write(2, "Usage: ", 7);
+		if(argv[0] == NULL)
+			argv[0] = program_name;
+		fdprint(2, argv[0]);
+		write(2, " [strings...]\n", 14);
+		return EX_USAGE;
+	}
+
+	/* i is the arg index, j is the char index */
+	for(j = 0; argv[1][j] != '\0'; ++j)
+		for(i = 2; i < argc; ++i)
+			if(argv[i-1][j] != argv[i][j])
+				return 1;
+
+	return 0;
+}