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uses crt;

const fi='kq.txt';

var a:array[1..10]of integer;

i,n:integer;

f1:text;

begin

clrscr;

n:=10;

for i:=1 to n do readln(a[i]);

assign(f1,fi); rewrite(f1);

for i:=1 to n do 

  begin

if (n%5<>0) then write(f1,a[i]:4);

else writeln(f1);

end;

close(f1);

readln;

end.

uses crt;

const fi='kq.txt';

var a:array[1..15]of real;

i,n:integer;

f1:text;

begin

clrscr;

n:=15;

for i:=1 to n do readln(a[i]);

assign(f1,fi); rewrite(f1);

for i:=1 to n do 

  begin

 if (i mod 5=0) then writeln(f1)

else write(f1,a[i],' ');

end;

close(f1);

readln;

end.

uses crt;

const fi='kq.txt';

var a:array[1..10]of integer;

i,n,dem:integer;

f1:text;

begin

clrscr;

n:=10;

for i:=1 to n do readln(a[i]);

assign(f1,fi); rewrite(f1);

for i:=1 to n do write(f1,a[i]:4);

writeln(f1);

dem:=0;

for i:=1 to n do  if a[i]>0 then dem:=dem+1;

writeln(f1,dem);

close(f1);

readln;

end.

uses crt;

const fo='data.txt';

var f1:text;

a:array[1..10]of integer;

i,n:integer;

begin

clrscr;

assign(f1,fo); rewrite(f1);

n:=10;

for i:=1 to n do readln(a[i]);

for i:=1 to n do write(f1,a[i]:4);

close(f1);

readln;

end.

Câu 2: 

uses crt;

var a,b:integer;

{-----------------chuong-trinh-con-------------------}

function ucln(x,y:integer):integer;

var i,uc:integer;

begin

if x<y then 

begin

uc:=1;

for i:=1 to x do 

  if (x mod i=0) and (y mod i=0) then  

begin

if uc<i then uc:=i;

end;

end

else begin

uc:=1;

for i:=1 to y do 

  if (x mod i=0) and (y mod i=0) then  

begin

if uc<i then uc:=i;

end;

end;

ucln:=uc;

end;

{--------------------------chuong-trinh-chinh------------------------}

begin

clrscr;

write('Nhap a='); readln(a);

write('Nhap b='); readln(b);

writeln(a,'/',b,'=',a div ucln(a,b),'/',b div ucln(a,b));

readln;

end.

Câu 1: 

const fi='songuyen.inp';

fo='tong.out';

var f1,f2:text;

a:array[1..100]of integer;

i,n,t:integer;

begin

assign(f1,fi); reset(f1);

assign(f2,fo); rewrite(f2);

n:=0;

while not eoln(f1) do 

  begin

n:=n+1;

read(f1,a[n]);

end;

t:=0;

for i:=1 to n do 

  if a[i] mod 2=0 then t:=t+a[i];

writeln(f2,t);

close(f1);

close(f2);

end.

uses crt;

const fi='baitap.txt';

var f1:text;

a:array[1..100]of integer;

n,i:integer;

begin

clrscr;

assign(f1,fi); rewrite(f1);

write('Nhap n='); readln(n);

for i:=1 to n do 

  begin

write('A[',i,']='); readln(a[i]);

end;

writeln(f1,n);

for i:=1 to n do 

  write(f1,a[i]:4);

close(f1);

readln;

end.

4 tháng 5 2021

uses crt;
const fi='baitap.txt';
var f1:text;
a:array[1..100]of integer;
i,n:integer;
begin
clrscr;
assign(f1,fi); rewrite(f1);
readln(n);
writeln(f1,n);
for i:=1 to n do
  begin
   read(a[i]);
   write(f1,a[i],'  ');
  end;
close(f1);
readln;
end.

uses crt;

const fo='b.txt';

var f1:text;

a:array[1..200]of integer;

i,n:integer;

begin

clrscr;

assign(f1,fo); rewrite(f2);

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(f1,a[i]:4);

close(f1);

readln;

end.

29 tháng 1 2021

program cap_so_cong; 

uses crt; var a: array[1..100] of integer; i, n, k: integer;

{i la bien dem, k de luu cap so} begin clrscr; write('N= ');

readln(n); for i:=1 to n do begin write('A(',i,')= ');

readln(a[i]);

 end; 

{Bat dau phan kiem tra} k:=a[2]-a[1]; i:=2; repeat i:= i+1; until (a[i]<>a[i-1]+k) or (i>n);

 if i>n then write('Day A la mot cap so cong') else

write('Day A khong phai la mot cap so cong');

 readln 

end. 

12 tháng 12 2021

#include <bits/stdc++.h>

using namespace std;

long long n,i,x,t,dem,j;

int main()

{

cin>>n;

x=n;

t=0;

while (n>0)

{

t=t+n%10;

n=n/10;

}

cout<<t;

dem=0;

for (i=2; i<=x; i++)

{

bool kt=true;

for (j=2; j*j<=i; j++)

if (i%j==0) kt=false;

if (kt==true) dem++;

}

cout<<dem;

return 0;

}