若有以下程序 #include char *a="you", b[ ]="welcome#you#to#China!"; main() { int i,j=0; char *p; for ( i=0; b[i]!='\0'; i++ ) { if (*a == b[i]) { p=&b[i]; for (j=0; a[j]!='\0'; j++) { if (a[j] != *p) break; p++; } if (a[j]=='\0') break; } } printf("%s\n", p); } 则程序的输出结果是