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Program HOC24;
var s: string;
i: byte;
begin
write('Nhap xau :'); readln(s);
for i:=1 to length(s) do if s[i]<>'a' then write(s[i]);
readln
end.
uses crt;
var st:string;
i,d:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
for i:=1 to d do
if st[i]='a' then delete(st,i,1);
writeln(st);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
string st;
int d,i,dem;
int main()
{
getline(cin,st);
d=st.length();
dem=0;
for (i=0; i<=d-1; i++)
if ((97<=st[i] && st[i]<=122) and (st[i]!=".")) dem++;
cout<<dem;
return 0;
}
cau 1:
uses crt;
var a:array[1..100] of integer;
n,i,min: integer;
begin
readln(n);
for i:=1 to n do
readln(a[i]);
min:=a[1];
for i:=2 to n do
if min>a[i] then min=a[i];
writeln(a[i]);
readln;
end.
cau 2:
uses crt;
g:text;
s:string;
const fo='CHUSO.TXT';
begin
assign(g,fo);
rewrite(g);
readln(s);
for i:=1 to length(s) do
if not((s[i] in ['a'..'z'])and(s[i] in ['A'..'Z])) then delete(s,i,1);
writeln(g,s);
end.
#include <bits/stdc++.h>
using namespace std;
double a,b;
int main()
{
cin>>a>>b;
cout<<fixed<<setprecision(2)<<pow((2*a+5*b),2);
return 0;
}
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.
uses crt;
var s:string;
d,i:integer;
begin
clrscr;
write('Nhap xau S:'); readln(s);
d:=length(s);
for i:=1 to d do
if not(s[i] in ['0'..'9']) then write(s[i]);
readln;
end.
quay lui ik