Program Pascal Perkalian Matriks

Program Perkalian_Matriks;
uses crt;
var
a,f,k:array[1..100,1..100] of integer;
b,c,i,j,l,z:longint; m,n,d,e,g,h:byte;
begin clrscr;
write(' Program Perkalian 2 Matriks');readln;writeln;writeln;
writeln('Masukkan data untuk matriks pertama (M1)'); writeln;
write('banyaknya baris matriks pertama: '); readln(b);
write('banyaknya kolom matriks pertama: '); readln(c);writeln;
for d:= 1 to b do
begin
for e:= 1 to c do
begin
write('entri baris ke-',d,' kolom ke-',e,': '); readln(a[d,e]);
end;
end;writeln;
writeln('M1:');writeln;
for d:= 1 to b do
begin
for e:= 1 to c do
begin
write(a[d,e]:7);
end;writeln;writeln;end;writeln;writeln;
writeln('Masukkan data untuk matriks kedua (M2)');writeln;
write('berapa banyak baris matriks kedua? '); readln(g);
write('berapa banyak kolom matriks kedua? '); readln(h);writeln;
for i:= 1 to g do
begin
for j:=1 to h do
begin
write('entri baris ke-',i,' kolom ke ',j,': '); readln(f[i,j]);
end;end;writeln;
writeln('M2:');writeln;
for i:= 1 to g do
begin
for j:= 1 to h do
begin
write(f[i,j]:7);
end;writeln;writeln;end;writeln;writeln;
writeln('Tekan Enter Untuk Melihat Hasil Operasi dari M1 x M2!');readln;
if c=i then begin
writeln('M1 x M2:');writeln;
for d:= 1 to b do
begin
for l:=1 to h do
begin
for e:= 1 to c do
begin
for j:= l to h do
begin
for i:=e to g do
begin
k[d,j]:=k[d,j]+a[d,e]*f[i,j];
if c=e then begin
write(k[d,j]:7);end;i:=g;
end;j:=h;end;end;end;writeln;writeln;end;end else
begin
writeln('Maaf?! Operasi dari M1 x M2 tidak dapat dilakukan');
writeln('karena kolom M1 (',c,' kolom) tidak sama dengan baris M2 (',i,' baris)');
end;
readln end.