A.getchar()B.gets()C.scanf()D.printf()
A.char str[]="hello";B.char str[30];strcpy(str,"hello");C.char str[30];str="hello";D.char str[30],*ps=str;strcpy(ps,"hello");
A.0B.正數(shù)C.負(fù)數(shù)D.隨機(jī)值