题型:单项选择题 以下程序的输出结果是______。char cchar(char ch) if(ch>=’A’&&ch<=’z’)ch=ch-’A’+’a’; return ch; main() char s[]="ABC+abc=defDEF",*p=s; while(* p)* p=cchar(* p); p++; printf("% s\n", s);A.abe+ABC=DEFdefB.abc+abe=defdefC.abcaABCDEFdefD.abcabcdefdef 查看答案