I keep getting undefined input error

2022 5 10
1 个回答
更新时间：2022 5 10
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0 个投票

Hello , im trying to make this gpa/cgpa calculator that asks the user for input , but whenever i reach the the input that requires a character it shows undifined error as shown in the screenshot :
Enter letter grade for course: A
Error using input
Undefined function or variable 'A'.
Error in Untitled11 (line 10)
Grade = input('Enter letter grade for course: ');

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回答（1 个）

Mathieu NOE
Mathieu NOE 2022-5-10

1 个投票

hello
you want to request a string not a number , so the correct code is :
Grade = input('Enter letter grade for course: ',"s");

4 个评论
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rak crak
rak crak 2022-5-10
Error using input
The second argument to INPUT must be 's'.
Error in Untitled11 (line 10)
grade = input('Enter letter grade for course: ',"s");
Mathieu NOE
Mathieu NOE 2022-5-10
ok
this can be due to which release you are working with (I have R2020b)
so look for the help of the function and correct if needed
rak crak
rak crak 2022-5-10
i use R2018a , will check help of the function , thank you.
Cris LaPierre
Cris LaPierre 2022-5-10
编辑：Cris LaPierre 2022-5-10
Try using single quotes for 's', similar to what you did for Course.
Grade = input('Enter letter grade for course: ','s');

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