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1:
uses crt;
const fi='ketqua.txt';
var f1:text;
st:string;
i,d:integer;
begin
clrscr;
assign(f1,fi); rewrite(f1);
write('Nhap xau:'); readln(st);
d:=length(st);
for i:=1 to d do
if st[i]=#32 then delete(st,i,1);
writeln(f1,st);
close(f1);
end.
2:
uses crt;
var a,b,c,d:integer;
{----------chuong-trinh-con-----------------------}
function min(x,y:integer):integer;
begin
if x<y then min:=x
else min:=y;
end;
{---------------chuong-trinh-chinh--------------------}
begin
clrscr;
write('a='); readln(a);
write('b='); readln(b);
write('c='); readln(c);
write('d='); readln(d);
writeln(min(a,min(b,min(c,d))));
readln;
end.
uses crt;
var st:string;
i,d:integer;
begin
clrscr;
readln(st);
d:=length(st);
for i:=1 to d do
if (st[i]<>'a') and (st[i]<>'A') then write(st[i]);
readln;
end.
Bài 1:
Program HOC24;
var s: string;
i: byte;
begin
write('Nhap xau : '); readln(s);
while s[1]=#32 do delete(s,1,1);
while pos(#32#32,s)<>0 do delete(s,pos(#32#32,s),1);
while s[length(s)]=#32 do delete(s,length(s),1);
for i:=1 to length(s) do
if s[i]=#32 then writeln(s[i]) else write(s[i]);
writeln;
readln
end.
Bài 2:
Program HOC24;
var s: string;
i: byte;
begin
write('Nhap xau : '); readln(s);
while s[1]=#32 do delete(s,1,1);
while pos(#32,s)<>0 do delete(s,pos(#32,s),1);
while s[length(s)]=#32 do delete(s,length(s),1);
writeln('Xau sau khi xoa ki tu trong: ',s);
readln
end.
Bài 3:
Program HOC24;
var s: string;
i: byte;
begin
write('Nhap xau : '); readln(s);
for i:=1 to length(s) do s[i]:=upcase(s[i]);
write('Xau sau khi in hoa : ',s);
readln
end.
Bài 4:
Program HOC24;
var s: string;
i: byte;
begin
write('Nhap xau : '); readln(s);
write('Xau sau khi dao nguoc: ');
for i:=length(s) downto 1 do write(s[i]);
readln
end.
uses crt;
const fi='dulieu.txt';
var f1:text;
st:string;
i,d:integer;
begin
clrscr;
assign(f1,fi); rewrite(f1);
write('Nhap xau:'); readln(st);
d:=length(st);
for i:=1 to d do
if (st[i] in ['A'..Z']) or (st[i] in ['0'..'9']) or (st[i]=#32) then write(f1,st[i]);
close(f1);
end.
Bài 3:
uses crt;
const fi='teptong.txt';
var a,b:integer;
f1:text;
begin
clrscr;
assign(f1,fi); rewrite(f1);
readln(a,b);
writeln(a+b);
writeln(f1,a+b);
close(f1);
readln;
end.
Cách 1: Có sử dụng chương trình con
uses crt;
var st:string;
{------------chuong-trinh-con-------------------}
function doi(st1:string):string;
var i,d:integer;
begin
d:=length(st1);
for i:=1 to d do
st1[i]:=upcase(st1[i]);
doi:=st1;
end;
{-------------------chuong-trinh-chinh--------------------}
begin
clrscr;
write('Nhap xau:'); readln(st);
writeln(doi(st));
readln;
end.
Cách 2: Không sử dụng chương trình con
uses crt;
var st:string;
i,d:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
for i:=1 to d do
st[i]:=upcase(st[i]);
writeln(st);
readln;
end.
*Cách có sử dụng chương trình con:
uses crt;
var st:string;
{--------------chuong-trinh-con---------------}
function doixau(st:string):string;
var i,d:integer;
begin
d:=length(st);
for i:=1 to d do
st[i]:=upcase(st[i]);
doixau:=st;
end;
{-------------chuong-trinh-chinh---------------}
begin
clrscr;
write('Nhap xau:'); readln(st);
writeln('Xau doi sang chu hoa la: ',doixau(st));
readln;
end.
*Cách không sử dụng chương trình con:
uses crt;
var st:string;
i,d:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
for i:=1 to d do
st[i]:=upcase(st[i]);
writeln('Xau sau khi doi la: ',st);
readln;
end.
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