creating error_msg function
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The issue I have is that:
You must write 4 functions. Three functions are for the area calculations: calc_circle_area, calc_rect_area, calc_triangle_are. These functions should do a calculation but NO input from the user. All user interaction must be done in the main script. The fourth function is called error_msg. Given an input string, it should display an appropriate message. For example
>> error_msg(‘base’)
value for base must be > 0
no calculcation will be performed
>> error_msg('length')
value for length must be > 0
no calculcation will be performed
Hint: to concatenate two strings, enclose them in [ ]. For example,
>> disp( ['Hello' 'world'])
Helloworld
I have made the first three functions, I just am having problem creating the error_msg function. I don't understand how to do it, if anyone could help that would be great!
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回答(1 个)
Walter Roberson
2011-10-4
function error_msg(Name)
phrase1 = 'value for ';
phrase2 = ' must be > 0\nno calculation will be performed\n';
phrase = char(zeros(1,length(phrase1)+length(Name)+length(phrase2));
for K = 1 : length(phrase1)
phrase(K) = phrase1(K);
end
for K = 1 : length(Name)
phrase(length(phrase1)+K) = Name(K);
end
for K = 1 : length(phrase2)
phrase(length(phrase1)+length(phrase2)+K) = phrase2(K);
end
fprintf(any(phrase),phrase);
end
7 个评论
Fangjun Jiang
2011-10-5
Walter, keep working on it. As of now, there are errors in the code. Passing that, fprintf() has run-time error.
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