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#include <bits/stdc++.h>
using namespace std;
long long a,b,t,i;
int main()
{
cin>>a>>b;
t=0;
for (i=a; i<=b; i++)
if ((i%3==0) or (i%5==0)) t=t+i;
cout<<t;
return 0;
}
Bài 1:
program in_phan_tu;
uses crt;
var n,i:longint;
a:array[1..100] of longint;
begin
clrscr;
write('nhap so n:');readln(n);
for i:=1 to n do
begin
write('nhap phan tu a[',i,']:');readln(a[i]);
end;
for i:=1 to n do
write(a[i]:3);
readln;
end.
Bài 2:
program tong_phan_tu;
uses crt;
var n,i,tong:longint;
a:array[1..100] of longint;
begin
clrscr;
write('nhap so n:');readln(n);
for i:=1 to n do
begin
write('nhap phan tu a[',i,']:');readln(a[i]);
end;
tong:=0;
for i:=1 to n do
tong:=tong+a[i];
writeln('tong cua day la:');
readln;
end.
Bài 3:
program tong_phan_tu_chan;
uses crt;
var n,i,tong:longint;
a:array[1..100] of longint;
begin
clrscr;
write('nhap so n:');readln(n);
for i:=1 to n do
begin
write('nhap phan tu a[',i,']:');readln(a[i]);
end;
tong:=0;
for i:=1 to n do
if a[i] mod 2=0 then tong:=tong+a[i];
writeln('tong cua day la:');
readln;
end.
Câu 1:
uses crt;
var a:array[1..100]of integer;
i,n:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
for i:=1 to n do
write(a[i]:4);
readln;
end.
Bài 1:
Program HOC24;
var a: array[1..1000] of integer;
i,n,d: integer;
begin
write('Nhap so phan tu: '); readln(n);
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); readln(a[i]);
end;
for i:=1 to n do if (a[i]<0) and (a[i] mod 2=0) then d:=d+1;
write('Co ',d,' so nguyen am chan trong day so');
readln
end.
Bài 2:
Program HOC24;
var a: array[1..1000] of integer;
i,n: integer;
t: longint;
begin
write('Nhap so phan tu: '); readln(n);
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); readln(a[i]);
end;
t:=0;
for i:=1 to n do if a[i] mod 5=0 then t:=t+a[i];
write(Tong la: ',t);
readln
end.
uses crt;
var n,i,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
t:=0;
for i:=1 to n do
if i mod 3=0 then
begin
write(i:4);
t:=t+i;
end;
writeln;
writeln('Tong cac so chia het cho 3 la: ',t);
readln;
end.
uses crt;
var a:array[1..100]of integer;
i,n,t,dem: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 6=0 then t:=t+a[i];
writeln('Tong cac so chia het cho 3 va 6 la: ',t);
for i:=1 to n do
if a[i]>3 then write(a[i]:4);
writeln;
for i:=1 to n do
write(a[i]:4);
dem:=0;
for i:=1 to n do
if (a[i] mod 2<>0) and (a[i] mod 5=0) then inc(dem);
writeln(dem);
readln;
end.
Uses Crt;
Var A : array [1..1000] of longint;
n, m, d, t, i, S, k : longint;
Begin
//Phan A
Clrscr;
Writeln(' Phan A ');
Write(' Ban hay nhap 1 so n bat ky: ');
Readln(n);
Write(' Cac so chia het cho ba tu 1 den ',n,' la: ');
For i:=1 to n do
If (i mod 3) = 0 then Write(' ',i);
//Phan B
Writeln;
Writeln(' Phan B ');
Write(' Ban hay nhap 1 so m bat ky: ');
Readln(m);
For i:=1 to m do
Begin
Write(' Ban hay nhap hang tu thu ',i,': ');
Readln(A[i]);
S:= S+A[i];
End;
Write(' Tong cua day so tren la: ',S);
//Phan C
Writeln;
Writeln(' Phan C ');
Write(' Ban hay nhap 1 so d bat ky: ');
Readln(d);
Write(' Ban hay nhap so K: ');
Readln(k);
For i:=1 to n do
Begin
Write(' Ban hay nhap hang tu thu ',i,': ');
Readln(A[i]);
If ((A[i] div k)=1)then t:=t+1;
End;
Write(' Co tat ca ',t,' so giong ',k);
Readln;
End.
uses crt;
var a:array[1..100]of integer;
i,n,t1,t2,t3:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
t1:=0;
for i:=1 to n do
if a[i]<0 then t1:=t1+a[i];
writeln('Tong cac so am la: ',t1);
t2:=0;
for i:=1 to n do
if a[i] mod 2=0 then t2:=t2+a[i];
writeln('Tong cac so chia het cho 2 la: ',t2);
t3:=0;
for i:=1 to n do
if (a[i]>0) and (a[i] mod 3=0) then t3:=t3+a[i];
writeln('Tong cac so duong chia het cho 3 la: ',t3);
readln;
end.
program hotrotinhoc;
var n,i.d: integer;
t: longint;
begin
readln(n);
t:=0; d:=0;
for i:=1 to n do
if i mod 3=0 then t:=t+i;
writeln('Tong cac so chia het cho 3 tu 1 den n la:',t);
for i:=1 to n do
if i mod 3=0 then inc(d);
write('Co ',d,' so chia het cho 3 tu 1 den N');
readln
end.
Bạn tham khảo nhé!
uses crt;
var a,b,t,i:integer;
begin
clrscr;
write('Nhap a='); readln(a);
write('Nhap b='); readln(b);
t:=0;
for i:=a to b do
if i mod 3=0 then t:=t+i;
writeln(t);
readln;
end.