Question

Create a c program that takes 1 parameter, a number

using that number, dynamically allocate a memory so you store that number of integers

write integers in order starting from 1 until you fill all that memory

print the address and values of the first and the last integer stored in the memory

Answer 1

C Program:

#include <stdio.h>
#include <stdlib.h>

//Function prototypes
void createArray(int n);

//Main function
int main()
{
int n;

//Reading a number from user
printf("Enter a number: ");
scanf("%d", &n);

//Calling function
createArray(n);

return 0;
}

//Function that allocates and writes numbers
void createArray(int n)
{
int i; //Looping Variable

//Dynamically allocating memory
int *arr;
arr = (int *)malloc(sizeof(int)*n);

//Filling array with numbers
for(i=0; i<n; i++)
{
//Storing values
*(arr+i) = i+1;
}

//Printing address and values of the first and the last integer stored in the memory
printf("\nFirst Integer: %d, stored at %u\n", *(arr+0), (arr+0));
printf("\nLast Integer: %d, stored at %u\n", *(arr+n-1), (arr+n-1));
}

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Sample Run: