输入未从Eclipse CDT中获取

Question

I'm trying simple "printing your name C program in Eclipse CDT", but the console is not reading the user input.

    #include <stdio.h>
    int main()
    {
      char* name = NULL;
      printf("enter you name ");

      gets(name);

      printf("Hi");
      fflush(stdout);
      puts(name);

      return 0;
    }

This is the output I get:

    enter you name Hi

Any idea why this is not reading the input from the user?

Answer 1

gets doesn't allocate memory for you, so your example causes undefined behavior. Also, its use is highly discouraged because of the ease of causing buffer overflows. Use

char name[SIZE];
fgets(name, SIZE, stdin);

instead. From man gets :

Never use gets() .

Shouldn't get any clearer.