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2012 .
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: , , ; (Pascal, C) .
1. , a,b,c .
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˳ (Pascal)
Program rivnannya;
uses crt;
var a,b,c,D,x,x1,x2:real;
Begin
clrscr;
writeln('Znahodzhennya koreniv kvadratnogo r-nnya');
writeln('Vvedit koefisienty r-nnya');
write('a='); readln(a);
write('b='); readln(b);
write('c='); readln(c);
if (a=0) and (b=0) and (c=0)
Then
writeln('R-nnya mae bezlich koreniv')
Else
Begin
if (a=0) and (b=0) and (c<>0)
Then
writeln ('Koreniv nenae')
Else
Begin
if (a=0) and (b<>0) and (c<>0)
Then
Begin
x:=-c/b;
writeln('x=',x:6:2);
End
Else
Begin
if (a=0) and (b<>0) and (c=0) or (a<>0) and (b=0) and (c=0)
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Then
writeln('x=0')
Else
Begin
D:=sqr(b)-4*a*c;
if D>=0
Then
Begin
x1:=(-b+sqrt(D))/2*a;
x2:=(-b-sqrt(D))/2*a;
writeln('x1=',x1:6:2,'x2=',x2:6:2);
End
Else
writeln('Diysnuh koreniv nemae');
end;
end;
end;
end;
readkey;
end.
.1
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2. a,b,c. , a,b,c , .
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˳ (Pascal)
Program heron;
uses crt;
var a,b,c,p,S: real;
Begin
clrscr;
writeln('Isnyvannya trikytnika');
writeln('Vvestu dovzhiny storin');
write('a='); readln(a);
write('b='); readln(b);
write('c='); readln(c);
if (a+b>c) and (a+c>b) and (b+c>a)
Then
Begin
p:=(a+b+c)/2;
S:=sqrt(p*(p-a)*(p-b)*(p-c));
writeln('Trikutnuk isnue i mae ploschy S=',S:6:2);
End
Else
writeln('Trikutnuk ne isnye');
readkey;
end.
.3
3. a,b. .
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˳ (Pascal)
program evklid;
uses crt;
var a, b:integer;
function nsd(x, y: integer):integer;
Begin
if x<>0 then nsd:=nsd(y mod x, x)
else nsd:=y;
end;
Begin
writeln('Vvedit chisla a i b: ');
write('a = '); readln(a);
write('b = '); readln(b);
writeln('NSD chisel ', a, ' i ', b, ' = ', nsd(a, b));
readkey;
end.
.4
4. , , 23 .
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˳ (Pascal)
program d23;
uses crt;
var i,k: integer;
Begin
clrscr;
i:= 989;
k:=0;
writeln('Dilyatsia na 23:');
Repeat
