The program prompts the user for numbers until a zero character is entered. Each time a new value is introduced the memory block pointed by numbers is increased by the size of an int. 上面是网上的对realloc的解释,但是我发
This statement frees the space allocated in the memory pointed byptr. Example 1: malloc() and free() // Program to calculate the sum of n numbers entered by the user#include<stdio.h>#include<stdlib.h>intmain(){intn, i, *ptr, sum =0;printf("Enter number of elements: ");scanf("...
Let's look at an example to see how you would use the realloc function in a C program:/* Example using realloc by TechOnTheNet.com */ /* The size of memory allocated MUST be larger than the data you will put in it */ #include <stdio.h> #include <stdlib.h> #include <string.h...
If size is 0, the realloc() function returns NULL. Example: realloc() function The following example shows the usage of realloc() function. #include<stdio.h> //To use realloc in our program #include<stdlib.h> int main() { int *ptr,i; //allocating memory ptr = malloc(sizeof(int))...
For additional compatibility information, see Compatibility in the Introduction. Example 复制 // crt_realloc.c // This program allocates a block of memory for // buffer and then uses _msize to display the size of that // block. Next, it uses realloc to expand the amount of // memory...
size:The new size (in bytes) for the memory block. It can be larger or smaller than the original size. If size is zero, the memory is freed. Example: Expanding a dynamically allocated array Code: #include <stdio.h> #include <stdlib.h> ...
To change this behavior, see Global state in the CRT.RequirementsExpand table RoutineRequired header realloc <stdlib.h> and <malloc.h>For more compatibility information, see Compatibility.ExampleC Copy // crt_realloc.c // This program allocates a block of memory for // buffer and then ...
the need forrealloc()- and many do - then consider using a standard libraryvector. For example...
realloc resolves to _realloc_dbg. For more information about how the heap is managed during the debugging process, see Using C Run-Time Library Debugging Support.Example/* REALLOC.C: This program allocates a block of memory forbuffer and then uses _msize to display the size of ...
need forrealloc()- and many do - then consider using a standard libraryvector. For example ...