字符串的拷贝

方法一：

char *str = NULL;

 str = new char[2048];

char *src = "FGREGREGERGERGERGREYHTYKUKTHRTHRTHR5TUTRH5RTH56";

    memcpy(str,src,strlen(src)+1);

方法二：

 char str[2048] = {0};
char *src = "FGREGREGERGERGERGREYHTYKUKTHRTHRTHR5TUTRH5RTH56";

strcpy_s(str,src);

方法三：

char str[2048] = {0};
char *src = "FGREGREGERGERGERGREYHTYKUKTHRTHRTHR5TUTRH5RTH56";

    sprintf(str,"%s",src);

方法四：

头文件中：加入#include <string>  using namespace std;

char str[2048] = {0};
char *src = "FGREGREGERGERGERGREYHTYKUKTHRTHRTHR5TUTRH5RTH56";

    std::string a(src,strlen(src)+1);

        qDebug()<<a.c_str();