На Pascal:
program sum4;uses crt;var a:integer;
begin writeln('Введите 4-х значное число');readln(a); writeln('Сумма крайних цифр = ',(a mod 10)+(a div 1000)); writeln('Сумма средних цифр = ',((a div 100) mod 10)+(a div 10) mod 10);end.
program a;
var
mas: 1..30,
ii: integer;
begin
for ii := 1 to 30
mas[ ii ] := 40 + random( 61 );
end.
Var i:integer;
begin
for i:=100 to 999 do
if sqr(i div 100) = i div 10 mod 10 + i mod 10 then writeln(i);
end.
Результат:
101
110
204
213
222
231
240
309
318
327
336
345
354
363
372
381
390
479
488
497
1010,00100101(2) = 001 010,001 001 101(2) = 12,115(8)
1110,0101000(2) = 001 110, 010 100(2) = 16,24(8)
1000,1111001(2) = 001 000,111 100 100(2) = 10,744(8)
101011,11(2) = 101 011, 110(2) = 53,6(8)
1010,00100101(2) = 1010, 0010 0101(2) = A,25(16)
1110,0101000(2) = 1110,0101(2) = E,5(16)
1000,1111001(2) = 1000,1111 0010(2) = 8,F2(16)
101011,11(2) = 0010 1011, 1100(2) = 2B,C(16)
266(8) = 010 110 110(2) = 10110110(2)
266(16) = 0010 0110 0110(2) = 1001100110(2)
1270(8) = 001 010 111 000(2) = 1010111000(2)
1270(16) = 0001 0010 0111 0000(2) = 100100111(2)
10,23(8) = 001 000, 010 011(2) = 1000,001(2)
10,23(16) = 0001 0000, 0010 0011(2) = 10000,00100011(2)
11,1(8) = 001 001, 001(2) = 1001,001(2)
11,1(16) = 0001 0001,0001(2) = 10001,0001(2)
Полный код на паскале
var
i: integer;
s: real;
begin
s := 0;
for i := 12 to 2001 do
s := s + i;
writeln(s);
s := 1;
for i := 2 to 201 do
s := s * i / (i + 2);
writeln(s);
s := 1;
for i := 1 to 33 do
if i mod 3 = 0 then s := s * 2;
writeln(s);
s := 2;
i := 10;
while i <= 13 do
begin
s := s + 11;
i := i + 1;
end;
writeln(s);
end.
Вывод программы и ответы соответственно
2002935
0.000146320050724284
2048
46