close all; clear; clc;
 
student = struct('name', 'John', 'age', 20, 'score', 90);
 
fprintf('Is ''name'' a field of student structure? %d\n',isfield(student, 'name'));
 
fprintf('Is ''salary'' a field of student structure? %d\n',isfield(student, 'salary'));
 
isfield(student, {'name', 'salary', 'score'})

Is 'name' a field of student structure? 1
 
Is 'salary' a field of student structure? 0
 
ans = 1 0 1