Learning C
C Function References
C Useful Resources
Selected Reading
Copyright © 2014 by tutorialspoint
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C - malloc function
Synopsis:
#include <stdio.h>
void * malloc ( int size );
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Description:
Allocates a block of size bytes of memory, returning a pointer to the beginning of the block.
Return Value
On success, a pointer to the memory block allocated by the function. If fails a NULL value is returned.
Example
#include <stdio.h>
int main ()
{
int i,n;
int * pData;
printf ("Amount of numbers to be entered: ");
scanf ("%d",&i);
pData = (int*) malloc (i*sizeof(int));
if (pData==NULL) exit (1);
for (n=0;n<i;n++)
{
printf ("Enter number #%d: ",n);
scanf ("%d",&pData[n]);
}
printf ("You have entered: ");
for (n=0;n<i;n++) printf ("%d ",pData[n]);
free (pData);
return 0;
}
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It will proiduce following result:
Amount of numbers to be entered: 10
Enter number #0: 2
Enter number #1: 3
Enter number #2: 3
Enter number #3: 4
Enter number #4: 5
Enter number #5: 6
Enter number #6: 7
Enter number #7: 8
Enter number #8: 3
Enter number #9: 9
You have entered: 2 3 3 4 5 6 7 8 3 9
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