Programmer's---C language details 22 (function return pointer considerations < dangling pointer >, view memory size The process can allocate)

Main content: function return pointer considerations < dangling pointer >, viewing the amount of memory the process can allocate

#include <stdio.h> char * favorite_fruit () {static char fruit[] = "Apple";  Without static, the pointer to this function will be dangling, since the fruit group number is destroyed when the function exits                                //Add static after the fruit array is allocated in the data segment instead of the stack. The lifetime is as long as the program, the function exits with the variable//still valid return fruit;} int main () {char *a = favorite_fruit ();p rintf ("%s\n", a);/* * See how much memory your process can allocate  *  Total allocated memory depends on the system configuration of  */int MB = 0; while (malloc (1 <<)) ++kb;  printf ("Allocated%d KB total\n", KB); return 0;}

Output:

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Programmer's---C language details 22 (function return pointer considerations &lt; dangling pointer &gt;, view memory size The process can allocate)