Program Ex7;
type matrix=array[1..100,1..100] of integer;
str=integer;
stl=integer;
procedure vvod(var a1:matrix;var n1:str;var m1:stl);
var i,j:integer;
begin
writeln('vvedite kolichestvo strok matrichi');
readln(n1);
writeln('vvedite kolichestvo stolbcov matrici');
readln(m1);
writeln('vvedite matricu');
for i:=1 to n1 do
begin
for j:=1 to m1 do
read(a1[i,j]);
readln;
end;
end;
procedure vivod(var a1:matrix;var n1:str;var m1:stl);
var i,j:integer;
begin
writeln('ishodnaya matrica');
for i:=1 to n1 do
begin
for j:=1 to m1 do
write(a1[i,j]:5);
writeln;
end;
end;
function sr(var a1:matrix;var n1:str;var m1:stl):real;
var i,j,s,k:integer;
srr:real;
begin
s:=0;
k:=0;
for i:=1 to n1 do
begin
for j:=1 to m1 do
begin
if a1[i,j]>0 then
s:=s+a1[i,j];
inc(k);
end;
end;
srr:=s/k;
sr:=srr;
end;
var a:matrix;
n:str;
m:stl;
begin
vvod(a,n,m);
vivod(a,n,m);
writeln('srednee arifmeticheskoe polozhitelnih elementov matrici= ',sr(a,n,m):5:2);
readln;
end.
