反转c型字符串

Question

这是我的代码:

    void reverseStr(char *str)
{
    if (str == NULL) return;
    int i=0, j=strlen(str) -1;
    while(i<j)
    {
        char temp = str[j];  //i think this is the cause of the problem
        str[j] = str[i];
        str[i] = temp;
        i++;
        j--;
    }
}

所以这里是它的所在:

int main()
{   
    char *str = "Forest Gump";
    reverseStr(str);
    cout << str;
}

这是我的错误:

/Applications/TextMate.app/Contents/SharedSupport/Bundles/C.tmbundle/Support/bin/bootstrap.sh:line 7:1931总线错误"$ 3".out

有什么想法吗？提前致谢.

Answer 1

Str指向固定字符串.你正在修改它.换句话说,您尝试更改文本文字.试试这个:

char *str = strdup("Forest Gump"); 
reverseStr(str); 
cout << str; 
free(str);