Question

Modify the following C code to the changes listed below. Please format code correctly.

#include <stdio.h>

#include <stdlib.h>

#define SIZE 5

void displayData(int [], int s);

void getData(int array[], int size)

{

    for(int i=0; i<SIZE; i++)

    {

        scanf("%d", &array[i]);

    }

}

int main()

{

    int grades[SIZE];

    for(int i=0; i<SIZE; i++)

    {

        grades[i] = 0;

    }

    getData(grades,SIZE);

    displayData(grades, SIZE);

}

void displayData(int grades[], int size)

{

    for(int i=0; i<size; i++)

    {

        printf("%d ", grades[i]);

    }

}

system("pause");

return 0;

}

----

These are the changes that need to be made.

• The main() function should:
  • Create a fixed or dynamic array, e.g., double grade[SIZE] or double *grade = malloc(...) or calloc(...)
  • Concerning the function call for getData(), pass the address of the array and its size to pointers; depending on how you change your program, it may or may not return something, but if it does, it should return an address. i.e., a pointer
  • Concerning the function call for displayData(), pass the address of the array and its size to pointers, and return nothing
  • Use the final for loop, which displays the contents of the array again without using displayData(), to demonstrate one of the ways, you can use pointers to manipulate an array; see below for more information
• The for loops, inside of the getData() and displayData() functions, should use different ways to demonstrate how to manipulate an array, e.g., p < q vs. p + i < p + size, or whatever

Answer 1

// do comment if any problem arises

//code

#include <stdio.h>

#include <stdlib.h>

#define SIZE 5

void displayData(int[], int s);

void getData(int array[], int size)

{

    for (int i = 0; i < SIZE; i++)

    {

        scanf("%d", array + i);

    }

}

int main()

{

    int grades[SIZE] = {0};

    getData(grades, SIZE);

    displayData(grades, SIZE);

    // Use the final for loop, which displays the contents

    // of the array again without using displayData(),

    for (int *i = grades; i < grades + SIZE; i++)

        printf("%d ", *i);

    printf("\n");

    system("pause");

    return 0;

}

void displayData(int grades[], int size)

{

    for (int i = 0; i < size; i++)

    {

        printf("%d ", grades[i]);

    }

    printf("\n");

}

Output: