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Tham khảo
uses crt;
var n,i,ta,td,d1,d2:integer;
a:array[1..100]of integer;
begin
clrscr;
write('nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
td:=0;
d1:=0;
for i:=1 to n do
if a[i]>0 then
begin
td:=td+a[i];
inc(d1);
end;
writeln('Trung binh cong cac so duong la: ',td/d1:4:2);
d2:=0;
ta:=0;
for i:=1 to n do
if a[i]<0 then
begin
inc(d2);
ta:=ta+a[i];
end;
writeln('Trung binh cong cac so am la: ',ta/d2:4:2);
readln;
end.
program bai_tap;
uses crt;
var n,i,dem1,dem2,s1,s2:byte;
tb1,tb2:real;
begin
clrscr;
write('nhap n: ');{nhap gia tri cua n VD: n= 10}
readln(n);
for i:= 1 to n do
if i mod 2 = 0 then {so chan la so chia het cho 2 hay chia 2 du 0}
begin
dem1:=dem1+1; {tinh xem co bao nhieu so mod 2 = 0}
s1:=s1+i; {tinh tong cac so chan}
end
else { neu i mod 2 khac 0 thi...(so le)}
begin
dem2:=dem2+1;
s2:=s2+i;
end;
tb1:= s1/dem1; {tinh trung binh cong}
tb2:= s2/dem2;
writeln('trung binh cong cac so chan: ',tb1:4:2); {xuat ra trung binh cong}
writeln('trung binh cong cac so le: ',tb2:4:2);
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..100]of integer;
n,dem,i,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 i mod 2=1 then
begin
inc(dem);
t:=t+a[i];
end;
writeln('Trung binh cong cac phan tu o vi tri le la: ',t/dem:4:2);
readln;
end.
#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;
}
#include <bits/stdc++.h>
using namespace std;
long long a[1000],i,n,t,dem;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
t=0;
dem=0;
for (i=1; i<=n; i++)
if ((a[i]>0) and (i%2==1))
{
t+=a[i];
dem++;
}
cout<<fixed<<setprecision(2)<<(t*1.0)/(dem*1.0);
return 0;
}
# Nhap mang
arr = [ ]
for i in range(10):
arr.append(int(input('Nhap phan tu: ')))
# Tinh va xuat ra tong cac phan tu le trong mang tong_cac_phan_tu_le = 0
for x in arr:
if x % 2 != 0:
tong_cac_phan_tu_le += x
print('Tong cac phan tu le trong mang la:', tong_cac_phan_tu_le)
# Nen va xuat ra ngoai man hinh so phan tu duong trong mang so_phan_tu_duong = 0
for x in arr:
if x > 0:
so_phan_tu_duong += 1
print('So phan tu duong trong mang la:', so_phan_tu_duong)
# Tinh va xuat ra man hinh trung binh cong cac phan tu trong mang tong_phan_tu = 0
for x in arr:
tong_phan_tu += x
trung_binh_cong = tong_phan_tu / len(arr)
print('Trung binh cong cac phan tu trong mang la:',trung_binh_cong)
# Tim va xuat ra man hinh gia tri va vi tri cua cac phan tu nho nhat trong mang
min_phan_tu = arr[0]
vi_tri_min_phan_tu = 0
for i in range(1, len(arr)):
if min_phan_tu > arr[i]:
min_phan_tu = arr[i]
vi_tri_min_phan_tu = i
print('Gia tri cua phan tu nho nhat trong mang la:', min_phan_tu)
print('Vi tri cua phan tu nho nhat trong mang la:', vi_tri_min_phan_tu)
#include <bits/stdc++.h>
using namespace std;
long long n,i,t,dem;
int main()
{
cin>>n;
t=0;
dem=0;
for (i=1; i<=n; i++)
if (i%3==0)
{
t=t+i;
dem++;
}
cout<<t<<endl;
cout<<fixed<<setprecision(2)<<(t*1.0)/(dem*1.0);
return 0;
}