uses crt;

var a:array[1..100]of integer;

min,n,i:integer;

{----------------chuong-trinh-con-------------------}

function nn(x,y:integer):integer;

begin

if x<y then nn:=x

else nn:=y;

end;

{-----------------chuong-trinh-chinh-----------------}

begin

clrscr;

write('nhap n='); readln(n);

for i:=1 to n do 

  begin

write('A[',i,']='); readln(a[i]);

end;

min:=nn(a[1],a[2]);

for i:=3 to n do 

  if min>a[i] then min:=a[i];

writeln(min);

readln;

end.

uses crt;

const fi='kiemtra.txt'

var f1:text;

a:array[1..100]of integer;

min,n,i:integer;

{----------------chuong-trinh-con-------------------}

function nn(x,y:integer):integer;

begin

if x<y then nn:=x

else nn:=y;

end;

{-----------------chuong-trinh-chinh-----------------}

begin

clrscr;

write('nhap n='); readln(n);

for i:=1 to n do 

  begin

write('A[',i,']='); readln(a[i]);

end;

min:=nn(a[1],a[2]);

for i:=3 to n do 

  if min>a[i] then min:=a[i];

writeln(min);

readln;

end.

Mình xin sửa lại một chút:

uses crt;

const fi='kiemtra.txt'

var f1:text;

a:array[1..100]of integer;

min,n,i:integer;

{----------------chuong-trinh-con-------------------}

function nn(x,y:integer):integer;

begin

if x<y then nn:=x

else nn:=y;

end;

{-----------------chuong-trinh-chinh-----------------}

begin

clrscr;

assign(f1,fi); reset(f1);

readln(f1,n);

for i:=1 to n do 

  read(f1,a[i]);

min:=nn(a[1],a[2]);

for i:=3 to n do 

  if min>a[i] then min:=a[i];

writeln(min);

readln;

end.

tham khảo

uses crt;

var i,t:integer;

begin

clrscr;

t:=0;

for i:=1 to 10 do

t:=t+i;

writeln('Tong cac so tu nhien tu 1 toi 10 la: ',t);

readln;

end.

refer

uses crt;

var i: integer;

begin

clrscr;

for i:= 1 to 10 do

begin writeln ( ' O ' ) end;

readln

end.

Bài 1: 

uses crt;

var n,i,s:integer;

begin

clrscr;

write('Nhap n='); readln(n);

s:=0;

i:=1;

while i<=n do 

  begin

s:=s+i;

inc(i);

end;

writeln('Tong cac so trong khoang tu 1 den ',n,' la: ',s);

readln;

end.

Bài 2: 

uses crt;

var n,i,s:integer;

begin

clrscr;

write('Nhap n='); readln(n);

s:=0;

i:=1;

while i<=n do 

  begin

s:=s+i;

i:=i+2;

end;

writeln('Tong cac so le trong khoang tu 1 den ',n,' la: ',s);

readln;

end.

alo

uses crt;

var i,j,kt:integer;

begin

clrscr;

for i:=100 to 1 do write(i:4);

writeln;

for i:=2 to 100 do 

  begin

kt:=0;

for j:=2 to trunc(sqrt(i)) do

  if i mod j=0 then kt:=1;

if kt=0 then write(i:4);

end;

readln;

end.

uses crt;

var a:array[1..100]of integer;

i,n,s:integer;

begin

clrscr;

write('Nhap n='); readln(n);

for i:=1 to n do

begin

write('A[',i,']='); readln(a[i]);

end;

s:=1;

for i:=1 to n do 

  s:=s*a[i];

writeln(s);

readln;

end.

uses crt;

var s:string;

i,d,dem:integer;

begin

clrscr;

write('Nhap xau S:'); readln(s);

d:=length(s);

writeln('Cac ki tu so co trong xau S:'); 

dem:=0;

for i:=1 to d do 

  if s[i] in ['0'..'9'] then

begin

write(s[i]:4);

inc(dem);

end;

writeln;

writeln('So ki tu chu so co trong xau S: ',dem);

for i:=1 to d do 

  if s[i] in ['0'..'9'] then s[i]:='A'

writeln('Xau sau khi doi la: ',s);

readln;

end.