switch case not recognizing input
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Code:user_input=input('Enter the mineral name: ')
switch user_input
case magnetite
fprintf('Mineral:Magnetite \n Formula:Fe3O4 \n Percent Iron:72.4 \n Melting Point (Celcius):1597')
case Magnetite
fprintf('Mineral:Magnetite \n Formula:Fe3O4 \n Percent Iron:72.4 \n Melting Point (Celcius):1597')
case hematite
fprintf('Mineral:Hematite \n Formula:Fe2O3 \n Percent Iron:69.9 \n Melting Point (Celcius):1565')
case Hematite
fprintf('Mineral:Hematite \n Formula:Fe2O3 \n Percent Iron:69.9 \n Melting Point (Celcius):1565')
case Goethite
fprintf('Mineral:Goethite \n Formula:FeO(OH) \n Percent Iron:62.9 \n Melting Point (Celcius):350')
case goethite
fprintf('Mineral:Goethite \n Formula:FeO(OH) \n Percent Iron:62.9 \n Melting Point (Celcius):350')
case limonite
fprintf('Mineral:Limonite \n Formula:2(FeO(OH))*3(H2O) \n Percent Iron:55 \n Melting Point (Celcius):variable')
case Limonite
fprintf('Mineral:Limonite \n Formula:2(FeO(OH))*3(H2O) \n Percent Iron:55 \n Melting Point (Celcius):variable')
case Siderite
fprintf('Mineral:Siderite \n Formula:FeCO3 \n Percent Iron:48.2 \n Melting Point (Celcius):450')
case siderite
fprintf('Mineral:Siderite \n Formula:FeCO3 \n Percent Iron:48.2 \n Melting Point (Celcius):450')
otherwise
disp('Mineral not recognized')
end
Output:
Error using input
Unrecognized function or variable 'siderite'.
Error in HW6P2 (line 1)
user_input=input('Enter the mineral name: ')
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Accepted Answer
KSSV
on 3 Aug 2022
user_input=input('Enter the mineral name: ') ;
switch user_input
case 'magnetite'
fprintf('Mineral:Magnetite \n Formula:Fe3O4 \n Percent Iron:72.4 \n Melting Point (Celcius):1597')
case 'Magnetite'
fprintf('Mineral:Magnetite \n Formula:Fe3O4 \n Percent Iron:72.4 \n Melting Point (Celcius):1597')
case 'hematite'
fprintf('Mineral:Hematite \n Formula:Fe2O3 \n Percent Iron:69.9 \n Melting Point (Celcius):1565')
case 'Hematite'
fprintf('Mineral:Hematite \n Formula:Fe2O3 \n Percent Iron:69.9 \n Melting Point (Celcius):1565')
case 'Goethite'
fprintf('Mineral:Goethite \n Formula:FeO(OH) \n Percent Iron:62.9 \n Melting Point (Celcius):350')
case 'goethite'
fprintf('Mineral:Goethite \n Formula:FeO(OH) \n Percent Iron:62.9 \n Melting Point (Celcius):350')
case 'limonite'
fprintf('Mineral:Limonite \n Formula:2(FeO(OH))*3(H2O) \n Percent Iron:55 \n Melting Point (Celcius):variable')
case 'Limonite'
fprintf('Mineral:Limonite \n Formula:2(FeO(OH))*3(H2O) \n Percent Iron:55 \n Melting Point (Celcius):variable')
case 'Siderite'
fprintf('Mineral:Siderite \n Formula:FeCO3 \n Percent Iron:48.2 \n Melting Point (Celcius):450')
case 'siderite'
fprintf('Mineral:Siderite \n Formula:FeCO3 \n Percent Iron:48.2 \n Melting Point (Celcius):450')
otherwise
disp('Mineral not recognized')
end
Enter you input like: 'siderite'
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