Uses crt;
var a:array[1..4] of integer;
sum,i:integer;
begin
clrscr;
writeln('Введите 4 целых числа:');
for i:=1 to 4 do
begin
read(a[i]);
if a[i]mod 3=0 then sum:=sum+a[i];
end;
writeln('Сумма чисел, кратных трем: ',sum);
<span>end.</span>
#include <stdio.h>
#include <stdlib.h>
int main()
{
int n, f=0;
scanf ("%d", &n);
int a[n];
srand (time(NULL));
for (int i = 0; i < n; i++ )
{
a[i] = rand() % 20 -10;
printf ("%4d ", a[i]);
}
printf("\n");
for (int i = 0; i < n; i++ )
if (a[i]==0) f++;
if (f>0) printf("YES");
else printf("NO");
return 0;
}
Пример:
10
<span> -1 -4 0 1 2 5 -7 -8 5 6
YES</span>
Var i, k,a1,a2,a3,b1,b2,b3: integer;
k:=0;
for i:=100000 to 999999 do
begin
a1:=i mod 100000;
a2:=i/10 mod 10000 ;
a3:=i/100 mod 1000;
b1:=i/1000 mod 100;
b2:=i/10000 mod 10;
b3:=i/100000 mod 1;
if ((a1+a2+a3=13) and (b1+b2+b3=13))
k:= k+1;
Var a,b,c:longint;
Begin
read(a,b,c);
writeln(a+b+c);
End.
var a, b, c, d, x1, x2, t: real;
begin
writeln('Программа для решения неравенства ax^2 + bx + c > 0');
write('Введите коэффициенты a, b, c: ');
readln(a, b, c);
if a = 0 then begin
if b = 0 then
begin
if c > 0 then writeln('(-∞; +∞)')
else writeln('ø')<span>
end</span>
else if b > 0 then writeln('(', -c / b : 0 : 3, '; +∞)')
else writeln('(-∞; ', -c / b, ')')
end
else
begin
d := b * b - 4 * a * c;
if d = 0 then
begin
x1 := -b / (2 * a);
if a > 0 then writeln('(-∞; ', x1, ') U (', x1, '; +∞)')
else writeln('ø')
end
else if d > 0 then
begin
x1 := (-b - sqrt(d)) / (2 * a);
x2 := (-b + sqrt(d)) / (2 * a);
if x1 > x2 then
begin
t := x1;
x1 := x2;
x2 := t
end;
if a > 0 then writeln('(-∞; ', x1, ') U (', x2, '; +∞)')
else writeln('(', x1, '; ', x2, ')')
end
else
begin
if a > 0 then writeln('(-∞; +∞)')
else writeln('ø')
end
end
end.