[C/C++][傳遞與回傳字串]

/*
* Author: MH
* Since 2013/10/21
* Toolkit: Code::Block 12.11
*/

#include <stdio.h>

void returnString(char **str2)
{
    printf("before: %s\n", *str2);    // before: abc
    *str2 = "def";
    printf("after: %s\n", *str2);    // before: def
}

int main()
{
    char *str1 = "abc";

    printf("before returnString: %s\n", str1);    // before returnString: abc
    returnString(&str1);
    printf("after returnString: %s\n", str1);    // before returnString: def

    return 0;
}