Viết chương trình :
Nhập 2 cạnh hình chữ nhật. In ra màn hình diện tích và chu vi của nó.
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giải
uses crt;
var n,i,x:longint;
begin
write(' nhap so n: ');readln(n);
x:=0;
for i:=2 to n-1 do
if n mod i=0 then x:=1;
if x=0 then writeln(n,' la so nguyen to ')
else writeln(n,' ko la so nguyen to ');
readln
end.
010010110101011010101001001001011010111101000111001010101101010010101011011101001011010101000100101001011010101101010100100100101101011110100011100101010110101001010101101110100101101010100010010100101101010110101010010010010110101111010001110010101011010100101010110111010010110101010001001010010110101011010101001001001011010111101000111001010101101010010101011011101001011010101000100101001011010101101010100100100101101011110100011100101010110101001010101101110100101101010100010010100101101010110101010010010010110101111010001110010101011010100101010110111010010110101010001001010010110101011010101001001001011010111101000111001010101101010010101011011101001011010101000100101001011010101101010100100100101101011110100011100101010110101001010101101110100101101010100010010100101101010110101010010010010110101111010001110010101011010100101010110111010010110101010001001010010110101011010101001001001011010111101000111001010101101010010101011011101001011010101000100101001011010101101010100100100101101011110100011100101010110101001010101101110100101101010100010010100101101010110101010010010010110101111010001110010101011010100101010110111010010110101010001001010010110101011010101001001001011010111101000111001010101101010010101011011101001011010101000100101001011010101101010100100100101101011110100011100101010110101001010101101110100101101010100010010100101101010110101010010010010110101111010001110010101011010100101010110111010010110101010001001010010110101011010101001001001011010111101000111001010101101010010101011011101001011010101000100101001011010101101010100100100101101011110100011100101010110101001010101101110100101101010100010010100101101010110101010010010010110101111010001110010101011010100101010110111010010110101010001001
giải
program hcn;
uses crt;
var d,r,dt:longint;
cv:real;
begin
write('nhap chieu dai va chieu rong cua hcn:');
readln(d,r);
cv:=(d+r)*2;
dt:=d*r;
writeln(' chu vi hcn do la:',cv);
writeln(' dien tich hcn do la:',dt);
readln
end.