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uses crt;
var n,i,s:integer;
begin
clrscr;
write('Nhap n='); readln(n);
s:=0;
i:=1;
while i<=n do
begin
s:=s+i;
inc(i);
end;
writeln(s);
readln;
end.
program tinhtong;
var n,i : integer;
S : real;
begin
write('Nhap n: ');
readln(n);
i:=1;
S:=0;
while i<=n do
begin
S:=S+1/i;
i:=i+1;
end;
writeln('Tong S= ',S);
readln;
end.
program tinh_tong_S;
var
n, i: integer;
S: real;
begin
write('Nhap n: ');
readln(n);
S := 0;
i := 1;
while i <= n do
begin
S := S + 1 / i;
i := i + 1;
end;
writeln('Tong S la: ', S:0:2);
readln;
end.
*while..do
Program HOC24;
var i,n: integer;
s: real;
begin
write('Nhap n: '); readln(n);
i:=1;
while i<=n do
begin
s:=s+1/sqr(i);
i:=i+1;
end;
write('S= ',s:6:2);
readln
end.
var i,n,s:integer;
begin
write('nhap n = ');readln(n);
i:=1;
while i<=n do
begin
s:=s+i;
i:=i+1;
end;
write('Tong la ',s);
readln;
end.
Program HOC24;
var i,n: integer;
S: longint;
begin
write('Nhap N: '); readln(n);
i:=1; s:=0;
while i<=n do
begin
s:=s+i;
i:=i+2;
end;
write('S=',S);
readln
end.
program tinh_tong_S;
var
n, i, S: integer;
begin
write('Nhap n: ');
readln(n);
S := 0;
i := 1;
while i <= n do
begin
S := S + i;
i := i + 2;
end;
writeln('Tong S la: ', S);
readln;
end.
1:
uses crt;
var n,i,t:integer;
begin
clrscr;
readln(n);
t:=0;
for i:=1 to n do
t:=t+i*i;
write(t);
readln;
end.
2
program bt2;
var i,n,t:integer;
begin
readln(n);
s:=0;
for i:=1 to n do
if i mod 2 = 1 then s:=s+i;
readln;
end.
int main()
{
int n;
long s;
s=0;
i=1;
printf("\nSo n la: ");
scanf("%d",&n);
for(int i=1; i<=n; i++)
{
s=s+i;
}
printf("\nTổng %d là %ld: ", n, s);
}
a.
Var i : integer;
S : real;
Begin
S:= 0;
For i:=1 to 100 do S:= S + i;
Write (S);
Readln;
End.
b.
Var i : integer;
S : real;
Begin
S:= 0;
For i:=1 to 10 do S:= S + 1/i;
Write (S);
Readln;
End.
c.
Var i,n : integer;
S : real;
Begin
write ('n = '); read (n);
S:= 0;
For i:=1 to n do S:= S + i;
Write (S);
Readln;
End.
d.
Var i : integer;
S : real;
Begin
write ('n = '); read (n);
S:= 0;
For i:=1 to n do S:= S + 1/i;
Write (S);
Readln;
End.