INPUT "vvedite kol-vo elementov ", n
DIM a(n)
FOR i = 1 TO n
INPUT "vvedite element ", a(i)
NEXT
PRINT "massiv"
FOR i = 1 TO n
PRINT a(i);
NEXT
PRINT
FOR i = 1 TO n
IF a(i) < 0 THEN s = s + a(i)
NEXT
PRINT "summa="; s
Тестирование выполнено в программе QB64 ( Скачать )