I keep getting a syntax error with my program???

Question

Aaron 2012-6-28

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https://ww2.mathworks.cn/matlabcentral/answers/42287-i-keep-getting-a-syntax-error-with-my-program

I'm creating a program that identifies x and y coordinates in a Cartesian coordinate system.

x=input('Enter value for x: '); y=input('Enter value for y: '); if x=0 & y=0 disp('This point is located at the origin.') elseif x>0 & y=0 fprintf disp('This point is located on the x-axis.') elseif x=0 & y>0 disp('This point is located on the y-axis.') elseif x>0 & y>0 disp('This point is located in the first quadrant.') elseif x<0 & y>0 disp('This point is located in the second quadrant.') elseif x<0 & y<0 disp('This point is located in the third quadrant.') elseif x>0 & y<0 disp('This point is located in the fourth quadrant.') end

I keep getting a syntax error with the x=0? The error tells me that '=' might be invalid Matlab syntax.

What am I doing wrong?

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Answer 1

Thomas 2012-6-28

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编辑：Thomas 2012-6-28

在 MATLAB Online 中打开

in the If statement you need to use '==' Your first if statement would be

if x==0 & y==0 
 disp('This point is located at the origin.')

Your entire code

x=input('Enter value for x: '); 
y=input('Enter value for y: '); 
if x==0 & y==0 
    disp('This point is located at the origin.')
elseif x>0 & y==0 
    disp('This point is located on the x-axis.') 
elseif x==0 & y>0 
    disp('This point is located on the y-axis.') 
elseif x>0 & y>0 
    disp('This point is located in the first quadrant.') 
elseif x<0 & y>0 
    disp('This point is located in the second quadrant.') 
elseif x<0 & y<0 
    disp('This point is located in the third quadrant.') 
elseif x>0 & y<0 
    disp('This point is located in the fourth quadrant.') 
end

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Answer 2

Wayne King 2012-6-28

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42287-i-keep-getting-a-syntax-error-with-my-program#answer_52053

在 MATLAB Online 中打开

 x=input('Enter value for x: '); 
 y=input('Enter value for y: '); 
 if x==0 & y==0 disp('This point is located at the origin.') 
 elseif x>0 & y==0 fprintf disp('This point is located on the x-axis.') 
 elseif x==0 & y>0 disp('This point is located on the y-axis.') 
 elseif x>0 & y>0 disp('This point is located in the first quadrant.') 
 elseif x<0 & y>0 disp('This point is located in the second quadrant.') 
 elseif x<0 & y<0 disp('This point is located in the third quadrant.') 
 elseif x>0 & y<0 disp('This point is located in the fourth quadrant.'); end