Q:

1D array using the dynamic memory allocation in C

YasminRadwan26
Save to bookmark
|
2022-06-22
|
  244 
0

In this example, we are creating a pointer to an integer and assign it heap memory. When memory is successfully assigned to the pointer then we can use this pointer as a 1D array and using the square braces “[]” we can access the pointer as like the statically allocated array. Let us see the below Image for better understanding.

C programming, examples, C programming examples,
login and add your own answer to this question

All Answers

YasminRadwan26
2022-06-22
need an explanation for this answer? contact us directly to get an explanation for this answer 

#include <stdio.h>
#include <stdlib.h>
#define FAIL 1
#define TRUE 0
int main(int argc, char *argv[])
{
    int *piBuffer = NULL; //pointer to integer
    int nBlock = 0; //Variable store number of block
    int iLoop = 0; //Variable for looping
    printf("\nEnter the number of block = ");
    scanf("%d",&nBlock); //Get input for number of block
    piBuffer = (int *)malloc(nBlock * sizeof(int));
    //Check memory validity
    if(piBuffer == NULL)
    {
        return FAIL;
    }
    //copy iLoop to each block of 1D Array
    for (iLoop =0; iLoop < nBlock; iLoop++)
    {
        piBuffer[iLoop] = iLoop;
    }
    //Print the copy data
    for (iLoop =0; iLoop < nBlock; iLoop++)
    {
        printf("\npcBuffer[%d] = %d\n", iLoop,piBuffer[iLoop]);
    }
    // free allocated memory
    free(piBuffer);
    return TRUE;
}

Output:

 

Enter the number of block = 7

 

pcBuffer[0] = 0

pcBuffer[1] = 1

pcBuffer[2] = 2

pcBuffer[3] = 3

pcBuffer[4] = 4

pcBuffer[5] = 5

pcBuffer[6] = 6

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

Pointers and dynamic allocation memory in C
This question belongs to these collections

Similar questions

need a help?

find thousands of online teachers now
Dynamically 2D array in C using the single pointer... >>
<< C Program to calculate the number of elements that...