C-Language-Tutorial/Problem_Set_40.c at main · codewithsayanjit/C-Language-Tutorial · GitHub

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// Allocate memory for 5 numbers . Then dynamically increase it to 8 numbers.

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

int main()
{
    int *ptr;
    ptr = (int *)calloc(5, sizeof(int));
    printf("Enter 5 numbers: ");
    for (int i = 0; i < 5; i++)
    {
        scanf("%d", &ptr[i]);
    }
    ptr = (int *)realloc(ptr, 8);
    printf("Enter 8 numbers: ");
    for (int i = 0; i < 8; i++)
    {
        scanf("%d\n", &ptr[i]);
    }
    // print
    for (int i = 0; i < 8; i++)
    {
        printf("Number %d is %d\n", i, ptr[i]);
    }
    return 0;
}


// Create an array of size 5(using calloc) & enter its values from the user.

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

int main()
{
    int *ptr;
    ptr = (int *)calloc(5, sizeof(int));
    printf("Enter 5 numbers: ");
    for (int i = 0; i < 5; i++)
    {
        scanf("%d", &ptr[i]);
    }

    for (int i = 0; i < 5; i++)
    {
        printf("Number %d is %d\n", i, ptr[i]);
    }
    return 0;
}*/