%10-9  3ֻ3ѡif-else-endѡʹá

%úʾIfelseendĵ3÷
function f=ifthree(x)
if x>100
    fprintf('%f is a  great positive number\n',x)
 elseif x>=10
        fprintf('%f is a  big positive number\n',x)
 elseif x>10
        fprintf('%f is a  small positive number\n',x)
elseif x==0
        fprintf('%f is zero\n',x)
 else
        fprintf('%f is minus number\n',x)
end
