how to Write a code that read student marks and assign grade to it. By reading the grades from a txt file.
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Please can you help me i already upload the file in MATLAB , but a want to learn the code
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Pratyush Swain
2022 年 6 月 29 日
Hi,
From my understanding,you want to read the grades and range of marks it corresponds to from a txt file and use this information to specify grades to the marks entered by the user.
To simulate this scenario I have taken a txt file which contains grades and thier ranges,Ex-(1 91 100,2 81 90,...)
I have assigned the highest grade as 1(for simplicity) ranging from 91-100,and similarly other grades follow.
You can refer to the following implementation:
%display content in grades file%
type grades.txt
%file handling to store the grades and their range%
fileID = fopen('grades.txt','r');
sizeA=[3 7];
A = fscanf(fileID,'%d %d %d',sizeA);
A=A';
ch='y';
%continue operations until user specifies%
while strcmp(ch,'y')==1
%taking input of marks%
prompt='Enter your mark';
x=input(prompt);
%exit if marks lie in invalid range%
if x>100 | x<0
fprintf("invalid marks-limit range btw 0-100...terminating");
break;
end
%find grade corresponding to entered mark%
grade=find_grade(A,x);
fprintf('your grade is %d \n',grade);
%ask if user wants to continue%
prompt='Do you want to continue (y/n)';
ch=input(prompt,'s');
end
%function to map marks to grades%
function g=find_grade(A,x)
[nr,~]=size(A);
for i=1:nr
if x>=A(i,2) && x<=A(i,3)
g=A(i,1);
return;
end
end
end
Hope this helps.
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