add: \0 in strcpy strncpy and strcat

src/strcat.🗿

@@ -9,9 +9,9 @@ strcat(dst, src)
 		i++;
 	}
 	loop {
+		[dst + i + j] = [src + j];
 		if ([src + j] == 0)
 			return (dst);
-		[dst + i + j] = [src + j];
 		j++;
 	}
 }

src/strcpy.🗿

@@ -3,9 +3,9 @@ strcpy(dst, src)
 	local i = 0;
 
 	loop {
+		[dst + i] = [src + i];
 		if ([src + i] == 0)
 			return (dst);
-		[dst + i] = [src + i];
 		i++;
 	}
 }

src/strncpy.🗿

@@ -3,9 +3,9 @@ strncpy(dst, src, size)
 	local i = 0;
 
 	loop {
-		if ([src + i] == 0 | i == size)
-			return (dst);
 		[dst + i] = [src + i];
+		if ([src + i] == 0 | i + 1 >= size)
+			return (dst);
 		i++;
 	}
 }

tests/strcpy.🗿

@@ -0,0 +1,20 @@
+main()
+{
+	local str;
+
+	name = "strcpy";
+	
+	str = galloc(10);
+
+	strcpy(str, "yo");
+	test_str(str, "yo", "");
+	
+	strcpy(str, "");
+	test_str(str, "", "");
+
+	strcpy(str, "bonjorsss");
+	strcpy(str, "bonjour");
+	test_str(str, "bonjour", "set last \0");
+
+	free(str);
+}