viết chương trình trung bình của dãy số A với n phần tử (n<=100)
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Program HOC24;
var i,n,d: integer;
t: real;
function nt(b: longint): boolean;
var j: longint;
begin
nt:=true;
if (b=2) or (b=3) then exit;
nt:=false;
if (b=1) or (b mod 2=0) or (b mod 3=0) then exit;
j:=5;
while j<=trunc(sqrt(b)) do
begin
if (b mod j=0) or (b mod (j+2)=0) then exit;
j:=j+6;
end;
nt:=true;
end;
begin
write('Nhap n: '); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
t:=0; d:=0;
for i:=1 to n do if nt(a[i]) then
begin
t:=t+a[i];
d:=d+1;
end;
write('Trung binh cong cac so nguyen to trong day: ',t/d:1:2);
readln
end.
Cách 2:
uses crt;
var a:array[1..100]of integer;
i,n,t,dem,j,kt:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
t:=0;
dem:=0;
for i:=1 to n do
if a[i]>1 then
begin
kt:=0;
for j:=2 to a[i]-1 do
if a[i] mod j=0 then kt:=1;
if kt=0 then
begin
t:=t+a[i];
inc(dem);
end;
end;
writeln('Trung binh cong cac so nguyen to la: ',t/dem:4:2);
readln;
end.
var a:array[1..1000] of integer;
i,n,d:integer;
s:longint;
tbc:real;
begin
write('n = ');readln(n);
For i:=1 to n do
begin
write('Nhap so thu ',i,' = ');readln(a[i]);
s:=s+a[i];
if a[i] mod 2 = 0 then d:=d+1;
end;
tbc:=s/n;
writel('Co ',d,' so chan');
write('Trung binh cong cua day so la ',tbc:10:2);
readln
end.
Program HOC24;
var d,i,n: integer;
t: real;
begin
write('Nhap n: '); readln(n);
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); readln(a[i]);
end;
d:=0; t:=0;
for i:=1 to n do
if a[i] mod 2=0 then
begin
d:=d+1;
t:=t+a[i];
end;
t:=t/d;
writeln('Co ',d,' so chan trong mang');
writeln('Trung binh cong cac phan tu chan la: ',t:2:5);
write('Cac phan tu trong day theo chieu doc: ');
for i:=1 to n do writeln(a[i]);
readln
end.
uses crt;
var a:array[1..6]of integer;
i,t:integer;
begin
clrscr;
for i:=1 to 6 do
begin
write('Nhap diem cua ban thu ',i,':'); readln(a[i]);
end;
t:=0;
for i:=1 to 6 do
t:=t+a[i];
writeln('Tong diem trung binh la: ',t);
writeln('Diem trung binh cua day la: ',t/6:4:2);
readln;
end.
Bài 1:
uses crt;
var a:array[1..100]of integer;
i,n,min:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
min:=a[1];
for i:=1 to n do
if min>a[i] then min:=a[i];
writeln(min);
readln;
end.
Bài 2:
uses crt;
var a:array[1..100]of integer;
i,n,max:integer;
begin
clrscr;
write('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(max);
readln;
end.
uses crt;
var a:array[1..100]of integer;
i,n,t1,t2,dem1,dem2:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
writeln('Day so vua nhap la: ');
for i:=1 to n do
write(a[i]:4);
writeln;
t1:=0;
dem1:=0;
t2:=0;
dem2:=0;
for i:=1 to n do
begin
if a[i] mod 2=0 then
begin
t1:=t1+a[i];
inc(dem1);
end
else begin
t2:=t2+a[i];
inc(dem2);
end;
end;
writeln('Trung binh cac so chan la: ',t1/dem1:4:2);
writeln('Trung binh cac so le la: ',t2/dem2:4:2);
readln;
end.
Bai 2:
uses crt;
var a:array[1..100]of integer;
i,n,t,nn:integer;
begin
clrscr;
readln(n);
for i:=1 to n do readln(a[i]);
nn:=a[1];
for i:=1 to n do
if nn>a[i] then nn:=a[i];
write(nn);
readln;
end.
program tinh_trung_binh_cong;
uses crt;
var i,n,max,min:integer
tbc:real;
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;
max:=a[1];min:=a[1];
for i;1= to n do
begin
if max<a[i] then max:=a[i];
if min>a[i] then min:=a[i];
end;
tbc:=(max+min)/2;
writeln(tbc);
readln;
end
uses crt;
var a:array[1..100]of integer;
i,n,max,min: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];
min:=a[1];
for i:=1 to n do
begin
if max<a[i] then max:=a[i];
if min>a[i] then min:=a[i];
end;
writeln((max+min)/2:4:2);
readln;
end.