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 "%$\n", s);

A．abc+ABC=DEFdef
B．abc+abc=defdef
C．abcABCDEFdef
D．abcabcdefdef

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 "%$\n", s);