若输入 "I am a boy!",下列程序的运行结果为______。 char connect（string1,string2,string) char

若输入 "I am a boy!",下列程序的运行结果为______。 char connect(string1,string2,string) char string1[],string2[],string[]; { int i,j; for (i=0;stringl[i] !='\0';i++) string[i]=stringl[i]; for (j=0;string2[j] !='\0';j++) string[i+j]=string2[j]; string[i+j ] ='\0'; } main () { char s1 [100] , s2 [100] , s [100]; printf ("\n 输入 string1: \n"); scanf("%s",s1); printf (" \n 输入 string2: \n" ); scanf ("%s", s2); connect (s1, s2, s); printf ("%s\n", s); }

A．I am a boy!

B．输入string2:

C．I am

D．I am a boy!