 8

,

:   

  (container class)     -
  .  stack  vect   -
.       
  ()  .  ,  C++ 
   .     ,
   ;       -
  .       
      .    -
   ,       -
 .      .  -
     ,   ,
-,   (  )   
  (STL).

8.1. 

    for   
    ,    .

//  a[i]  - 
for (i = 0; i < size; ++i)
sum += a [i] ;

   [ ]    .  for -
       i,   
.         
,    .       
:

for (j = size - 1; j != 0; --j)

sum += a [j ] ;