function bai1

i=0;

while i==0

a=input('Nhap canh a: ');

b=input('Nhap canh b: ');

c=input('Nhap canh c: ');

if (a<b+c) & (b<a+c) & (c<a+b) & (a>0) & (b>0) & (c>0)

i=1;

else

disp('* Ban da nhap sai yeu cau nhap lai *')

end

end

cv= a+b+c;

disp(['Chu vi cua tam giac la: ',num2str(cv)])