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uses crt;
var i,n,kt:integer;
begin
clrscr;
readln(n);
kt:=0;
for i=2 to trunc(sqrt(n)) do
if n mod i=0 then kt:=1;
if (kt=0) and (n>1) then write('phai')
else write('Khong phai');
readln;
end.
Var i,n,souoc:integer;
Begin
While n <= 1 do
Begin
Write('Nhap n = ');readln(n);
End;
For i:=1 to n do
If n mod i = 0 then souoc:=souoc+1;
If souoc = 2 then write(n,' la so nguyen to')
Else write(n,' khong la so nguyen to');
Readln;
End.
Bài 1
Var s,i:integer;
tb:real;
Begin
Write('Nhap n = ');readln(n);
i:=1;
s:=0;
While i<=n do
Begin
s:=s+i;
i:=i+1;
End;
tb:=s/n;
Writeln('Tong la ',s);
Write('Trung binh la ',tb:10:2);
Readln;
End.
Bài 2
Var i,n,souoc:integer;
Begin
Write('Nhap n = ');readln(n);
i:=1;
While i <= n do
Begin
i:=i + 1;
If n mod i = 0 then souoc:=souoc + 1;
End;
If souoc = 1 then write(n,' la so nguyen to')
Else write(n,' khong la so nguyen to');
Readln;
End.
uses crt;
var a:array[1..100]of integer;
i,n,t,kt,j:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
writeln('Cac so vua nhap la: ');
for i:=1 to n do
write(a[i]:4);
writeln;
t:=0;
for i:=1 to n do
t:=t+a[i];
writeln('Tong cua day so la: ',t);
kt:=0;
for j:=2 to trunc(sqrt(t)) do
if t mod j=0 then
begin
kt:=1;
break;
end;
if kt=0 then writeln(t,' la so nguyen to')
else writeln(t,' khong la so nguyen to');
readln;
end.
Cậu ơi sai khúc write('A[',i,']='); readln(a[i]); rồi nó cứ bị sao sao á
uses crt;
var a:array[1..100]of integer;
i,n,t,kt:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
writeln('Cac so ban vua nhap la: ');
for i:=1 to n do
write(a[i]:4);
writeln;
t:=0;
for i:=1 to n do
t:=t+a[i];
writeln('Tong cac so vua nhap la: ',t);
if t>=2 then
begin
kt:=0;
for i:=2 to trunc(sqrt(t)) do
if t mod i=0 then
begin
kt:=1;
break;
end;
if kt=0 then writeln(t,' la so nguyen to')
else writeln(t,' khong la so nguyen to');
end
else writeln(t,' khong la so nguyen to');
readln;
end.
uses crt;
var n,i:integer;
m:real;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until (1<=n) and (n<=30000);
m:=0;
for i:=1 to n do
m:=m+sqrt(i);
writeln('m=',m:4:2);
readln;
end.
uses crt;
var n,m,i,dem,t,t1,d1:integer;
//chuongtrinhcon
function ktnt(var n:integer):boolean;
var i:integer;
kt:boolean;
begin
kt:=true;
for i:=2 to trunc(sqrt(n)) do
if n mod i=0 then kt:=false;
if (kt=true) then ktnt:=true
else ktnt:=false;
end;
//chuongtrinhchinh
begin
clrscr;
readln(n,m);
if (ktnt(n)=true) then writeln(n,' la so nguyen to')
else writeln(n,' ko la so nguyen to');
dem:=0;
t:=0;
for i:=2 to n do
if (ktnt(i)=true) then
begin
write(i:4);
t:=t+i;
dem:=dem+1;
end;
writeln;
writeln(t,' ',dem);
t1:=0;
d1:=0;
for i:=n to m do
if ktnt(i)=true then
begin
write(i:4);
t1:=t1+i;
inc(d1);
end;
writeln;
writeln(t1,' ',d1);
readln;
end.
program thefirstprograms;
uses crt;
var a,b,c:longint;
begin
clrscr;
write('Nhap so thu nhat ');readln(a);
write('Nhap so thu hai ');readln(b);
write('Nhap so thu ba ');readln(c);
if (a>b) and (a>c) then writeln(a,' la so lon nhat')
else if (b>a) and (b>c) then writeln(b,' la so on nhat')
else if (c>a) and (c>b) then writeln(c,' la so lon nhat')
else (a=b=c) then writeln('Ba so bang nhau');
readln
end.
const fi='tep.inp';
fo='tep.out';
var f1,f2:text;
m,n,a:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,m,n);
a:=m;
if a>n then a:=n;
kt:=0;
for i:=2 to trunc(sqrt(a)) do
if a mod i=0 then kt:=1;
if (kt=0) and (a>1) then writeln(f2,'so nho hon la so nguyen to')
else writeln(f2,'so nho hon khong la so nguyen to');
close(f1);
close(f2);
end.