[Pascal] Program Perkalian Matriks

Code:

program perkalian_matrik;
uses wincrt;

var
a,b,c : array [1..20,1..20] of integer;
i,j,k,x,y,z : integer;

begin
clrscr;
writeln('Ukuran matrix A');

write('Baris : '); readln(x);
write('Kolom : '); readln(y);
writeln;
writeln;

writeln('Ukuran matrix B');
writeln('Baris : ',y); write('Kolom : ');
readln(z);

for i:=1 to x do
for j:=1 to y do
begin
write('Elemen a[',i,',',j,'] : ');
readln(a[i,j]);
end;
writeln;
for i:=1 to y do
for j:=1 to z do
begin
write('Elemen B[',i,',',j,'] : ');
readln(b[i,j]);
end;
for i:=1 to x do
for j:=1 to z do
for k:=1 to y do
c[i,j] := c[i,j] + a[i,k]*b[k,j];
writeln;
writeln;
writeln('Hasil dari perkalian Matrix A dengan Matrix B adalah : ');
Writeln;
for i:=1 to x do
begin
for j:=1 to z do
write(c[i,j],' ');
writeln;
end;
writeln;
readln;
end.