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#include <bits/stdc++.h>
using namespace std;
long long a[1000],i,n,t;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++)
if (a[i]%3==0) t+=a[i];
cout<<t;
return 0;
}
Câu 1:
uses crt;
var a:array[1..500]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]<0) and (a[i] mod 7=0) then t:=t+a[i];
writeln('Tong cac so am chia het cho 7 la: ',t);
readln;
end.
Câu 2:
uses crt;
var c,a:array[1..10]of integer;
i,kt,j,dem:integer;
begin
clrscr;
for i:=1 to 10 do
begin
write('C[',i,']='); readln(c[i]);
end;
dem:=0;
for i:=1 to 10 do
if c[i]>1 then
begin
kt:=0;
for j:=2 to c[i]-1 do
if c[i] mod j=0 then kt:=1;
if kt=0 then
begin
inc(dem);
a[dem]:=c[i];
end;
end;
if dem=0 then writeln('Trong day khong co so nguyen to')
else begin
writeln('Cac so nguyen to trong day la: ');
for i:=1 to dem do
write(a[i]:4);
end;
readln;
end.
Câu 3:
uses crt;
var d:array[1..200]of integer;
i,k,dem:integer;
begin
clrscr;
write('Nhap k='); readln(k);
for i:=1 to k do
begin
write('D[',i,']='); readln(d[i]);
end;
dem:=0;
for i:=1 to k do
if (a[i] mod 2=0) and (a[i]>=10) then inc(dem);
writeln('So phan tu chan co 2 chu so la: ',dem);
readln;
end.
uses crt;
var a:array[1..100]of integer;
i,n,dem:integer;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until (1<=n) and (n<=1000);
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;
dem:=0;
for i:=1 to n do
if a[i] mod 3=0 then inc(dem);
writeln('So phan tu chia het cho 3 la: ',dem);
readln;
end.
uses crt;
var a:array[1..50]of integer;
i,n,t,t1:integer;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until (0<n) and (n<=50);
for i:=1 to n do
begin
repeat
write('A[',i,']='); readln(a[i]);
until a[i]<=100;
end;
t:=0;
t1:=0;
for i:=1 to n do
begin
if a[i] mod 2=0 then t:=t+a[i]
else t1:=t1+a[i];
end;
writeln('Tong cac so chan la: ',t);
writeln('Tong cac so le la: ',t1);
readln;
end.
a)
Type mang=array[1..100]of integer;
procedure nhap(var a:mang);
var n,i:integer;
begin
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
end;
b) procedure xuat(var a:mang);
var i,n:integer;
begin
for i:=1 to n do
if a[i] mod 2=0 then write(a[i]:4);
end;
bprogram min
uses crt
var A: array [1...250] of integer
tong :integer;
begin
tong:=0
writeln(‘nhap n:’); readln (n)
forr i:=1 to n do
begin
writeln (‘nhap phan tu thu ‘,i);
readln (A[i] );
end
for i:=1 to n do
begin
if (A[i] mod 3=0)
then tong:=tong +A[i];
end
writeln (Tong cac phan tu chia het cho 3)
readln ;
end
Khi nãy gửi nhầm 2 cái nha
program Baitap1;
uses crt;
var Min ,n, i:integer;
A: array [1..1000] of integer;
begin
clrscr;
write('Nhap N ');readln(n);
for i:=1 to n do begin
write('A[',i,']=');readln(A[i]);
end;
Min:=A[1];
for i:=1 to n do if Min>A[i] then Min:=A[i];
write('So Nho Nhat Trong Mang La ',Min);
readln;
end.