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a)
uses crt;
VAR
n, d, i: integer;
BEGIN
clrscr;
Writeln ('Nhap vao n='); readln (n);
d : = 1;
For i: = 1 to n do
d: = d*i;
Writeln ('d=',d);
Readln;
END.
c)
uses crt;
VAR
n, i, demuoc: integer;
BEGIN
clrscr;
Writeln ('Nhap vao n='); readln (n);
demuoc: = 0;
For i: = 1 to n do
If n mod i = 0 then
demuoc : = demuoc + 1;
If demuoc = 2 then
Writeln ('n la so nguyen to')
ELSE
Writeln ('n khong phai la so nguyen to');
Readln ;
END.
Còn phần b bạn tự nghĩ nha!
Chúc bạn học tốt!
Bài 1:
#include <bits/stdc++.h>
using namespace std;
long long i,n,x,t;
int main()
{
cin>>n;
t=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x%15==0) t=t+x;
}
cout<<t;
return 0;
}
Bài 2:
#include <bits/stdc++.h>;
using namespace std;
int main();
{
long m,n;
cout<<"Nhap m="; cin>>m;
cout<<"Nhap n="; cin>>n;
cout<<m*n-2;
return 0;
}
Program bt_3;
Uses crt;
Var Tong, n, i: integer;
Begin
Clrscr;
Writeln(‘nhap n=’);
Readln (n);
Tong:=0;
For i:=1 to n do
If I mod 5 = 0 then Tong:= Tong+i;
Writeln(‘Tong la:’,Tong);
Readln
End.
Program bt_3;
Uses crt;
Var Tong, n, i: integer;
Begin
Clrscr;
Writeln(‘nhap n=’);
Readln (n);
Tong:=0;
For i:=1 to n do
If I mod 3 = 0 then Tong:=Tong+i;
Writeln(‘Tong la:’,Tong);
Readln
End.
uses crt;
var a,vtmax,vtmin:array[1..100]of integer;
n,i,max,min,dem,t,dem1,t1,dem2,t2,dem3,t3,dem4,t4,k:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
max:=a[1];
for i:=1 to n do
if max<a[i] then max:=a[i];
writeln('So lon nhat trong day la: ',max);
dem:=0;
t:=0;
for i:=1 to n do
if max=a[i] then
begin
inc(dem);
t:=t+a[i];
vtmax[dem]:=i;
end;
if dem>1 then
begin
writeln('Tong cac so max la: ',t);
writeln('Cac vi tri co so max la: ');
for i:=1 to dem do
write(vtmax[i]:4);
end;
min:=a[1];
for i:=1 to n do
if min>a[i] then min:=a[i];
writeln('So nho nhat trong day la: ',min);
dem1:=0;
t1:=0;
for i:=1 to n do
if min=a[i] then
begin
inc(dem1);
t1:=t1+a[i];
vtmin[dem1]:=i;
end;
if dem1>1 then
begin
writeln('Tong cac so min la: ',t1);
writeln('Cac vi tri co so min la: ');
for i:=1 to dem1 do
write(vtmin[i]:4);
end;
write('Nhap k='); readln(k);
dem2:=0;
t2:=0;
for i:=1 to n do
if (i mod 2=0) and (a[i] mod k=0) then
begin
dem2:=dem2+1;
t2:=t2+a[i];
end;
writeln('So phan tu o vi tri chan trong day la boi cua ',k,' la: ',dem2);
writeln('Tong cac so o vi tri chan trong day la boi cua ',k,' la: ',t2);
dem3:=0;
t3:=0;
for i:=1 to n do
if (i mod 2=1) and (k mod a[i]=0) then
begin
inc(dem3);
t3:=t3+a[i];
end;
writeln('So phan tu o vi tri le trong day la uoc cua ',k,' la: ',dem3);
writeln('Tong cac so o vi tri le trong day la uoc cua ',k,' la: ',t3);
dem4:=0;
t4:=0;
for i:=1 to n do
if (a[i]+k=1) or (a[i]=k+1) then
begin
inc(dem4);
t4:=t4+a[i];
end;
writeln('So phan tu la anh em cua ',k,' trong day la: ',dem4);
writeln('Tong cac phan tu la anh em cua ',k,' trong day la: ',t4);
readln;
end.
Program bt_3;
Uses crt;
Var Tong, n, i: integer;
Begin
Clrscr;
Writeln(‘nhap n=’);
Readln (n);
Tong:=0;
For i:=1 to n do
If I mod 2 = 1 then Tong:= Tong+i;
Writeln(‘Tong la:’,Tong);
Readln
End.
Program bt_3;
Uses crt;
Var Tong, n, i: integer;
Begin
Clrscr;
Writeln(‘nhap n=’);
Readln (n);
Tong:=0;
For i:=1 to n do
If I mod 2 = 0 then Tong:= Tong+i;
Writeln(‘Tong la:’,Tong);
Readln
End.
uses crt;
var n,i,t:integer;
begin
clrscr;
readln(n);
s:=0;
for i:=1 to n do
s:=s+i*i;
write(s);
readln;
end.
uses crt;
var n,i,s:integer;
begin
Write('Nhap n = '); readln(n);
s:=0;
for i:=1 to n do
s:=s+i*i;
write(s);
readln;
end.