найти среднее значение произвольного столбца

input"vvedite chislo strok ",n
input"vvedite chislo stolbcov ",m
dim a(n,m)
randomize timer
for i=1 to n
for j=1 to m
a(i,j)=int(rnd*20)
next
next
print "massiv"
for i=1 to n
for j=1 to m
print a(i,j);" ";
next
print
next
do
input"vvedite nomer stolbca ",k 
loop until k<=m
for i=1 to n
s=s+a(i,k)
next
print"srednee znachenie stolbca ";k"=";s/n

input"vvedite a ",a
input"vvedite b ",b
input"vvedite c ",c
for x=-5 to 5 step 0.1
n=n+1
y=y+a*x^2+b*x+c
next
print"srednee znachenie Y=";y/n

input "vvedite x ",x
input "vvedite B ",b
a=1
if x<a then y=x^2 else if x>b then y=tan(x) else y=x^2+a*b*|!REG3XP3!>cos(x)-sin(x)
print "y=";y

INPUT "vvedite x ", x
INPUT "vvedite B ", b
a = 1
SELECT CASE x
CASE IS < a
y = x ^ 2
CASE IS > b
y = TAN(x)
CASE ELSE
y = x ^ 2 + a * b * COS(x) - SIN(x)
END SELECT
PRINT "y="; y