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2:
uses crt;
var st:string;
d,i,dem1,dem2:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
dem1:=0;
dem2:=0;
for i:=1 to d do
begin
if st[i] in ['0'..'9'] then inc(dem1);
if (st[i] in ['a'..'z']) or (st[i] in ['A'..'Z']) then inc(dem2);
end;
writeln('So ki tu la chu so la: ',dem1);
writeln('So ki tu la chu cai la: ',dem2);
for i:=1 to d do
if st[i] in ['0'..'9'] then delete(st,i,1);
writeln('Xau sau khi xoa cac chu so la: ',st);
readln;
end.
Bài 1:
uses crt;
var S:String;
vt:integer;
begin
clrscr;
Write(‘Nhap 1 xau:’); Readln(S);
While pos(‘nang’,s)>0 do
Begin
Vt:= pos(‘nang’,s);
Delete(s,vt,4);
Insert(‘mua’,s ,vt);
End;
Writeln(‘Xau sau khi thay the ’,s);
Readln;
End.
Bài 2:
uses crt;
var st:string;
d,i,kt:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
kt:=0;
for i:=1 to d do
if st[i]<>st[d-i+1] then kt:=1;
if kt=0 then writeln(st,' la xau doi xung')
else writeln(st,' khong la xau doi xung');
readln;
end.
Use crt;
Var S : String;
P: longint;
Begin
Write('Nhap s: '); readln (S);
For P:=length(S) downto 1 do
Write(P);
Readln;
End.
uses crt;
var st:string;
i,d:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
writeln('Xau ban vua nhap la: ',st);
writeln('Xau nguoc la: ');
for i:=d downto 1 do
write(st[i]:4);
readln;
end.
1:
uses crt;
var a:array[1..100]of integer;
i,n,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
t:=0;
for i:=1 to n do
if a[i] mod 2<>0 then t:=t+a[i];
writeln(t);
readln;
end.
3:
const fi='dl.txt';
fo='kq.txt';
var f1,f2:text;
a:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,a);
writeln(f2,a);
close(f1);
close(f2);
end.
Program HOC24;
var i,d1,d2: byte;
st1,st2: string[60];
begin
write('Nhap xau st1: '); readln(st1);
//---------------Câu 1-------------------
d1:=0; d2:=0;
for i:=1 to length(st1) do
begin
if st1[i]='A' then d1:=d1+1;
if st1[i]='a' then d2:=d2+1;
end;
writeln('Co ',d1,' ki tu A trong xau');
writeln('Co ',d2,' ki tu a trong xau');
//---------------------- Câu 2 --------------------
st2:='';
for i:=1 to length(st1) do if st1[i] in ['a'..'z'] then st2:=st2+st1[i];
writeln('Xau st2 la: ',st2);
//------------------------------Câu 3--------------------
for i:=1 to length(st1) do st1[i]:=upcase(st1[i]);
write('Xau st1 sau khi in hoa la: ',st1);
//--------------------------------------------------------
readln
end.
program stringManipulation;
var
st1, st2: string;
countN, i: integer;
begin
write('Nhap vao xau ki tu st1: ');
readln(st1);
countN := 0;
for i := 1 to length(st1) do
begin
if (st1[i] = 'N') or (st1[i] = 'n') then
begin
countN := countN + 1;
end;
end;
writeln('So ky tu N va n trong xau st1 la: ', countN);
st2 := '';
for i := 1 to length(st1) do
begin
if (st1[i] >= 'A') and (st1[i] <= 'Z') then
begin
st2 := st2 + st1[i];
end;
end;
writeln('Cac ky tu in hoa trong xau st1 la: ', st2);
write('Xau st1 viet theo chieu nguoc lai la: ');
for i := length(st1) downto 1 do
begin
write(st1[i]);
end;
readln;
end.
st1 = input("Nhập vào xâu kí tự: ")
count_n = 0
st2 = ""
for char in st1:
if char == 'N' or char == 'n':
count_n += 1
if char.isupper():
st2 += char
print("Số lần xuất hiện của kí tự 'N' và 'n' là:", count_n)
print("Xâu kí tự chỉ chứa kí tự in hoa là:", st2)
print("Xâu kí tự đảo ngược là:", st1[::-1])
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.