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Cant find the mistake....

donpepedonpepe Posts: 1Member
[code]program ocjena;
uses wincrt;
var
i, k, S, y, n:real;
begin
S:=0;
i:=1;
y:=i+1;
K:=1/i -1/y;
write ('Unesi krajnji broj: ');
readln (n);
for i:=1 to n do
for i:=1 to 10 do
begin
S:=S+K;
i:=i+1;
if (i=n) then
S:=S+1/i ;
if (y=n) then
S:=S-1/y;
end;
writeln ('S iznosi', S:2:2);
end.[/code]

This is my program which calculate something like that...or should be..:)
1/1 - 1/2 + 1/3 - 1/4 + 1/5 - 1/6 + 1/7 - 1/8... +- 1/n...
But i cant find out why it sais that for loop (only one) is not good....

Comments

  • AtexAtex Posts: 268Member
    : [code]: program ocjena;
    : uses wincrt;
    : var
    : i, k, S, y, n:real;
    : begin
    : S:=0;
    : i:=1;
    : y:=i+1;
    : K:=1/i -1/y;
    : write ('Unesi krajnji broj: ');
    : readln (n);
    : for i:=1 to n do [color=Red]<----------[/color]
    : for i:=1 to 10 do [color=Red]<--- Same variable to control 2 loops[/color]
    : begin
    : S:=S+K;
    : i:=i+1;
    : if (i=n) then
    : S:=S+1/i ;
    : if (y=n) then
    : S:=S-1/y;
    : end;
    : writeln ('S iznosi', S:2:2);
    : end.[/code]:
    :
    : This is my program which calculate something like that...or should
    : be..:)
    : 1/1 - 1/2 + 1/3 - 1/4 + 1/5 - 1/6 + 1/7 - 1/8... +- 1/n...
    : But i cant find out why it sais that for loop (only one) is not
    : good....
    :

    [code][color=Blue]
    program ocjena;

    var i,n:word;
    s:real;


    begin
    write('Unesi krajnji broj: ');readln(n); {<-- Dunno what it means}
    s:=0;
    if n>0 then
    if n<2 then s:=1 else begin
    s:=1;
    for i:=2 to n do
    if odd(i) then s:=s+1/i
    else s:=s-1/i;
    end;
    writeln('S iznosi: ', s:2:6);
    end.
    [/color][/code]
  • AtexAtex Posts: 268Member
    More simplified :)

    [code][color=Blue]
    program ocjena;

    var i,n:word;
    s:real;

    begin
    write('Unesi krajnji broj: ');readln(n);
    s:=0;
    if n>0 then begin
    s:=1;
    for i:=2 to n do
    if odd(i) then s:=s+1/i
    else s:=s-1/i;
    end;
    writeln('S iznosi: ', s:2:6);
    end.[/color][/code]
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