SW006014 Microchip Technology, SW006014 Datasheet - Page 105

• Manufacturer Part Number: SW006014
• Description: C COMPILER MPLAB FOR PIC24 MCU
• Manufacturer: Microchip Technology
• Type: MPLAB® C Compilerr
• Series: PIC24r

Specifications of SW006014

• Supported Families: PIC24
• Core Architecture: PIC
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC24
• Tool Function: Compiler
• Tool Type: Compiler
• Processor Series: PIC24
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: PIC24
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2008 Microchip Technology Inc.
free
Description:
Include:
Prototype:
Argument:
Remarks:
Example:
getenv
Description:
Include:
Prototype:
Argument:
Return Value:
Remarks:
Frees memory.
<stdlib.h>
void free(void *ptr);
ptr
Frees memory previously allocated with calloc, malloc, or real-
loc. If free is used on space that has already been deallocated (by a
previous call to free or by realloc) or on space not allocated with
calloc, malloc, or realloc, the behavior is undefined.
#include <stdio.h>
#include <stdlib.h> /* for malloc, free
int main(void)
{
}
Output:
Memory allocated
Memory freed
Get a value for an environment variable.
<stdlib.h>
char *getenv(const char *name);
name
Returns a pointer to the value of the environment variable if successful;
otherwise, returns a null pointer.
This function must be customized to be used as described (see
pic30-libs). By default there are no entries in the environment list
for getenv to find.
long *i;
if ((i = (long *)malloc(50 * sizeof(long))) ==
else
{
}
printf("Cannot allocate memory\n");
printf("Memory allocated\n");
free(i);
printf("Memory freed\n");
NULL)
points to memory to be freed
name of environment variable
/* for printf, sizeof, */
/* NULL
DS51456E-page 101
*/
*/