仿照书上的例子，但是一直显示字符串未正常终止，找不出为什么
comm=['name=get(he1,"String");','type=get(he2,"String");','ability=get(he3,"String");','number=str2num(get(he4,"String"));','[titrant,indicator,scope,stoichiometrypH] = exam(name,type,ability,number);','set(ht1,"String",titrant);','set(ht2,"String",indicator);','set(ht3,"String",scope);','set(ht4,"String",stoichiometrypH);'];
uicontrol(hf,'style','push','position',[100,100,85,25],'string','开始','call',comm)
