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Câu 1:
#include <bits/stdc++.h>
using namespace std;
long long i,n,k,dem,x;
int main()
{
cin>>n;
cin>>k;
dem=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x==k) dem++;
}
cout<<dem;
return 0;
}
Bài 1:
uses crt;
var a:array[1..100]of integer;
i,n,kt,max,x,j,tam:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
writeln('Mang ban vua nhap la: ');
for i:=1 to n do
write(a[i]:4);
writeln;
for i:=1 to n-1 do
for j:=i+1 to n do
if a[i]>a[j] then
begin
tam:=a[i];
a[i]:=a[j];
a[j]:=tam;
end;
writeln('Day tang dan la: ');
for i:=1 to n do
write(a[i]:4);
writeln;
write('Nhap x='); readln(x);
max:=0;
kt:=0;
for i:=1 to n do
if (a[i] mod 2=0) and (a[i]<=x) then
begin
if max<a[i] then max:=a[i];
kt:=1;
end;
if kt=0 then writeln('Trong day khong co so le')
else writeln('So chan lon nhat khong vuot qua ',x,' la: ',max);
readln;
end.
Bài 1:
uses crt;
var a:array[1..200]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 5=0 then t:=t+a[i];
writeln('Tong cac so chia het cho 5 la: ',t);
readln;
end.
Bài 2:
uses crt;
var st:string;
d,i:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
for i:=1 to d do
if st[i]=#32 then delete(st,i,1);
writeln(st);
readln;
end.
uses crt;
var a:array[1..200]of integer;
n,i,k,t,t1:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
write('Nhap k='); readln(k);
t:=0;
for i:=1 to n do
if a[i] mod 2<>0 then t:=t+a[i];
t1:=0;
for i:=1 to n do
if a[i] mod k=0 then t1:=t1+a[i];
writeln('Tong cac phan tu le la: ',t);
writeln('Tong cac phan tu la boi cua ',k,' la: ',t1);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long n,i,x,a[1000],t;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
cin>>x;
t=0;
for (i=1; i<=n; i++)
if (a[i]!=x)
{
cout<<a[i]<<" ";
t+=a[i];
}
cout<<endl;
cout<<t;
return 0;
}
Câu 1:
uses crt;
var s:string;
i,d,dem:integer;
begin
clrscr;
write('nhap xau S:'); readln(s);
d:=length(s);
dem:=0;
for i:=1 to d do
if s[i]='a' then inc(dem);
writeln('so lan xuat hien cua chu a trong xau ',s,' la: ',dem);
readln;
end.
Câu 2:
uses crt;
var a:array[1..99]of integer;
n,i,k:integer;
s:longint;
begin
clrscr;
repeat
write('nhap n='); readln(n);
if n>=100 then writeln('nhap lai');
until n<100;
for i:=1 to n do
begin
repeat
write('a[',i,']='); readln(a[i]);
if a[i]>=3000 then writeln('nhap lai');
until a[i]<3000;
end;
write('nhap so k:'); readln(k);
s:=1;
for i:=1 to n do
if k mod a[i]=0 then s:=s*a[i];
writeln('tich cac uoc cua ',k,' trong day la: ',s);
readln;
end.
b1:
user crt;
var s:string;
d,i:byte;
begin
clrscr;
writeln('Nhap xau S: ');readln(s);
for i:=1 to length(s) do
if s[i] = 'a' then inc(d);
writeln('Chu a xuat hien ',d,' lan');
readln;
end.