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=DEFdef
B.abc+abe=defdef
C.abcaABCDEFdef
D.abcabcdefdef