#include <stdio.h>
#include <stdlib.h>
void
getstr(char *&retstr)
{
char *tmp = (char *)malloc(25);
strcpy(tmp, "hello,world");
retstr = tmp;
}
int
main(void)
{
char *retstr;
getstr(retstr);
printf("%s
", retstr);
return 0;
}
gcc
不会编译这个文件,但是在添加 #include <cstring>
之后我可以使用 g++ 来编译这个源文件.
gcc
would not compile this file, but after adding #include <cstring>
I could use g++ to compile this source file.
问题是:C语言是否支持通过引用传递指针参数?如果没有,为什么?
The problem is: does the C programming language support passing pointer argument by reference? If not, why?
谢谢.
不,C 不支持引用.这是设计使然.您可以在 C 中使用指向指针的指针代替引用.引用仅在 C++ 语言中可用.
No, C doesn't support references. It is by design. Instead of references you could use pointer to pointer in C. References are available only in C++ language.
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