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Câu 1:
program mangsonguyen;
var
a: array[1..100] of integer;
i, n: integer;
begin
writeln('Nhap so phan tu trong mang: ');
readln(n);
writeln('Nhap cac phan tu cua mang: ');
for i := 1 to n do
readln(a[i]);
writeln('Mang vua nhap la:');
for i := 1 to n do
write(a[i], ' ');
end.
Câu 2:
program trungbinhcong;
var
a: array[1..100] of integer;
i, n, k, sum: integer;
avg: real;
begin
writeln('Nhap so phan tu trong mang: ');
readln(n);
writeln('Nhap cac phan tu cua mang: ');
for i := 1 to n do
readln(a[i]);
writeln('Nhap so k: ');
readln(k);
sum := 0;
for i := 1 to n do
begin
if a[i] <= k then
sum := sum + a[i];
end;
if sum > 0 then
begin
avg := sum / n;
writeln('Trung binh cong cac phan tu co gia tri <= ', k, ' la: ', avg:0:2);
end
else
begin
writeln('Khong co phan tu nao co gia tri <= ', k);
end;
end.
Câu 3:
program DemSoNguyenTo;
var
a: array [1..100] of integer;
i, j, n, count: integer;
laSoNguyenTo: boolean;
begin
write('Nhap so phan tu cua mang: ');
readln(n);
write('Nhap cac phan tu cua mang: ');
for i := 1 to n do
readln(a[i]);
count := 0;
writeln('Cac so nguyen to trong mang la: ');
for i := 1 to n do
begin
laSoNguyenTo := true;
for j := 2 to (a[i] div 2) do
begin
if (a[i] mod j = 0) then
begin
laSoNguyenTo := false;
break;
end;
end;
if laSoNguyenTo and (a[i] > 1) then
begin
writeln(a[i]);
count := count + 1;
end;
end;
writeln('Tong so cac so nguyen to la: ', count);
readln;
end.
uses crt;
var a:array[1..100]of integer;
i,n,dem,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
dem:=0;
t:=0;
for i:=1 to n do
if a[i] mod 2<>0 then
begin
inc(dem);
t:=t+a[i];
end;
writeln('Trung binh cong cac so le la: ',t/dem:4:2);
readln;
end.
uses crt;
var a:array[1..20]of integer;
i,n,tb,dem:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
tb:=0;
dem:=0;
for i:=1 to n do
if a[i] mod 3=0 then
begin
tb:=tb+a[i];
inc(dem);
end;
writeln('Trung binh cong cac so chia het cho 3 la: ',tb/dem:4:2);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
double b[100],x,ln,t;
int i,n,dem;
int main()
{
cin>>n;
ln=-1e10;
for (i=1; i<=n; i++)
{
cin>>b[i];
ln=max(ln,b[i]);
}
for (i=1; i<=n; i++)
cout<<b[i]<<" ";
cout<<endl;
cout<<ln<<endl;
t=0;
dem=0;
for (i=1; i<=n; i++)
if (a[i]>x)
{
t=t+a[i];
dem++;
}
cout<<fixed<<setprecision(2)<<t/(dem*1.0);
return 0;
}
uses crt;
var a,t,dem:integer;
begin
clrscr;
t:=0;
dem:=0;
repeat
write('Nhap a='); readln(a);
if (a mod 2=0) and (a mod 3=0) then
begin
t:=t+a;
dem:=dem+1;
end;
until a=0;
writeln('Trung binh cong cua cac so chia het cho 3 va 2 la: ',t/dem:4:2);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long n,t;
int main()
{
cin>>n;
t=0;
while (n!=0)
{
if ((n%3==0) or (n%5==0)) t=t+n;
cin>>n;
}
cout<<t;
return 0;
}
}
#include <bits/stdc++.h>
using namespace std;
long long n,i,a[1000],t,dem,t1;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++)
if (a[i]%2==0) cout<<a[i]<<" ";
cout<<endl;
t=0;
dem=0;
for (i=1; i<=n; i++)
if (a[i]%2==0)
{
t=t+a[i];
dem++;
}
cout<<fixed<<setprecision(2)<<(t*1.0)/(dem*1.0)<<endl;
t1=0;
for (i=1; i<=n; i++)
if (a[i]%2!=0 || a[i]%3==0) t1+=a[i];
cout<<t1;
return 0;
}