a=123.456
a = num2str(123.456);
b = find(a=='.');
c = length(a)-b
或者一步到位:
a=123.456;
a=num2str(a);
weishu= length(a)-find(a=='.')
a=123.456
a = num2str(123.456);
b = find(a=='.');
c = length(a)-b
或者一步到位:
a=123.456;
a=num2str(a);
weishu= length(a)-find(a=='.')