fprintf is showing NaN

Question

Olivia Warner 2021-2-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/737587-fprintf-is-showing-nan

回答： Raghav Gnanasambandam 2021-2-5

在 MATLAB Online 中打开

i am tryng to create a prgram that gives a prognosis for a temperature reading in any units. the output always offers

The temperature of 36.667 degrees Celsius, results in a prognosis of NaN

why is my message reading NaN, and how can i fix it?

TEMP=input("Temperature in any Units");
UNITS=input("What are the Temperature Units? (Type only the number '1' for Celcius, '2' for farenheiht, or '3' for kelvin)");
if UNITS==1||2||3
    if UNITS==1
        T=TEMP;
        if T<35
            PG="Hypothermia";
        elseif T>=35&&T<36.111
            PG="Possibly Sick";
        elseif T>=36.111&&T<37.5
            PG="Normal";
        elseif T>=37.5&&T<38.333
            PG="Fever";
        elseif T>=38.333&&T<40
            PG="Severe Fever";
        elseif T>=40
            PG="Hyperplexia";
        end
    end
    if UNITS==2
        T=(TEMP-32)*(5/9);
        if T<35
            PG="Hypothermia";
        elseif T>=35&&T<36.111
            PG="Possibly Sick";
        elseif T>=36.111&&T<37.5
            PG="Normal";
        elseif T>=37.5&&T<38.333
            PG="Fever";
        elseif T>=38.333&&T<40
            PG="Severe Fever";
        elseif T>=40
            PG="Hyperplexia";
        end
    end
    if UNITS==3
        T=TEMP-273.15;
        if T<35
            PG="Hypothermia";
        elseif T>=35&&T<36.111
            PG="Possibly Sick";
        elseif T>=36.111&&T<37.5
            PG="Normal";
        elseif T>=37.5&&T<38.333
            PG="Fever";
        elseif T>=38.333&&T<40
            PG="Severe Fever";
        elseif T>=40
            PG="Hyperplexia";
        end
    end
    fprintf("The temperature of %.3f degrees Celsius, results in a prognosis of %.3f",T,PG)
end 

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Answer 1

Raghav Gnanasambandam 2021-2-5

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/737587-fprintf-is-showing-nan#answer_616152

在 MATLAB Online 中打开

You need to add '%s' for printing a string in fprintf. Here is the corrected code.

TEMP=input("Temperature in any Units");
UNITS=input("What are the Temperature Units? (Type only the number '1' for Celcius, '2' for farenheiht, or '3' for kelvin)");
if UNITS==1||2||3
    if UNITS==1
        T=TEMP;
        if T<35
            PG="Hypothermia";
        elseif T>=35&&T<36.111
            PG="Possibly Sick";
        elseif T>=36.111&&T<37.5
            PG="Normal";
        elseif T>=37.5&&T<38.333
            PG="Fever";
        elseif T>=38.333&&T<40
            PG="Severe Fever";
        elseif T>=40
            PG="Hyperplexia";
        end
    end
    if UNITS==2
        T=(TEMP-32)*(5/9);
        if T<35
            PG="Hypothermia";
        elseif T>=35&&T<36.111
            PG="Possibly Sick";
        elseif T>=36.111&&T<37.5
            PG="Normal";
        elseif T>=37.5&&T<38.333
            PG="Fever";
        elseif T>=38.333&&T<40
            PG="Severe Fever";
        elseif T>=40
            PG="Hyperplexia";
        end
    end
    if UNITS==3
        T=TEMP-273.15;
        if T<35
            PG="Hypothermia";
        elseif T>=35&&T<36.111
            PG="Possibly Sick";
        elseif T>=36.111&&T<37.5
            PG="Normal";
        elseif T>=37.5&&T<38.333
            PG="Fever";
        elseif T>=38.333&&T<40
            PG="Severe Fever";
        elseif T>=40
            PG="Hyperplexia";
        end
    end
    fprintf("The temperature of %.3f degrees Celsius, results in a prognosis of %s",T,PG)
end 