MATLAB cell类型转string类型

names={'fyc','hy','ljg','lqf','lsl','ml','nhz','rj','syj','wl','wq','wyc','xch','xxj','yjf','zc','zdx','zjg','zl','zyf'};
len_names=length(names);
names(1)
for i=1:len_names
    url=strcat('D:\GaitDatasetA-silh\silhouettes\',names(i),'\00_1');
    url=url{1};
end