SW006014 Microchip Technology, SW006014 Datasheet - Page 105
SW006014
Manufacturer Part Number
SW006014
Description
C COMPILER MPLAB FOR PIC24 MCU
Manufacturer
Microchip Technology
Type
MPLAB® C Compilerr
Series
PIC24r
Datasheet
1.SW006014.pdf
(246 pages)
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
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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
*/
*/
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