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uses crt;
var st:string;
n,vt,d,i:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
write('Nhap vi tri can xoa:'); readln(vt);
write('Nhap so ki tu can xoa:'); readln(n);
delete(st,vt,n);
writeln('Xau sau khi xoa la: ',st);
readln;
end.
uses crt;
var st:string;
d,i:integer;
begin
clrscr;
readln(st);
d:=length(st);
for i:=1 to d do
if not (st[i] in ['0'..'9']) then write(st[i]);
readln;
end.
uses crt;
var st:string;
begin
clrscr;
readln(st);
delete(st,3,5);
writeln(st);
readln;
end.
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.
tham khảo
uses crt;
var st:string;
i,d:integer;
begin
clrscr;
readln(st);
d:=length(st);
for i:=1 to d do
if (not (st[i] in ['A'..'Z'])) and (not (st[i] in ['a'..'z'])) then write(st[i]);
readln;
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.
Giải giúp mk vói🥰