一个典型的strcpy函数错误

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

 

int main()

{

/*the right code will be: char *a = (char *)malloc(4 * sizeof(char));*/

char * a = "abc";

const char * b = "def";

/*error: because you can not write to an constant character*/

a = strcpy(a,  b);

printf("%s/n", a);

 

return 0;

}