[TOC] strcpy需要拷贝的字符串要有\0 ~~~ int main() { char arr[100] = "hello world"; char * p = malloc(sizeof(char) * 100); strcpy(p, "hello world"); printf("%s\n", p); *p = 'A'; printf("%s\n", p); getchar(); return EXIT_SUCCESS; } ~~~ 输出 ~~~ hello world Aello world ~~~