(30)有以下程序

#include

void ss(char *s,char t)

{ while(*s)

{ if(*s==t)*s=t-′a′+′A′;

s++;}}

void main()

{ char str1[100]="abcddfefdbd",c=′d′;

ss(str1,c); cout << str1;}

程序运行后的输出结果是

A)ABCDDEFEDBD

B)abcDDfefDbD

C)abcAAfefAbA

D)Abcddfefdbd