why this code can't run in my PC but can run in another. it show error about "Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters"

R=imread('test.png');

R=rgb2gray(R);

figure(1); imshow(R);

F=[0:255];

gamma1=0.6;

G1=(round(255*(F/255).^gamma1)

gamma2=0.4;

G2=(round(255*(F/255).^gamma2)

R2=uint8(zeros(size(R)));

R3=uint8(zeros(size(R)));

for i=1:numel(R)

R2(i)=G1(R(i)+1);

R3(i)=G2(R(i)+1);

end

figure(2); imshow(R2,[]);

figure(3); imshow(R3);

figure(4); plot(F,G1); xlabel('f(r,c)');ylabel('g(r,c)');

hold on

plot(F,G2);

Answer 1

[Sudhakar Shinde]

Looks like bracket close ')' missing for G1 & G2:

G1=(round(255*(F/255).^gamma1))

G2=(round(255*(F/255).^gamma2))

[Walter Roberson]

i suspect that it should be more like (round(F/255)*255).^gamma1