Question

1. Create a file that contains 20 integers or download the attached file

twenty-integers.txt

twenty-integers.txt reads:
12 20 13 45 67 90 100 34 56 89 33 44 66 77 88 99 20 69 45 20

Create a program that:

2. Declares a c-style string array that will store a filename.

3. Prompts the user to enter a filename. Store the file name declared in

the c-string.

4. Opens the file. Write code to check the file state. If the file

fails to open,

display a message and exit the program.

5. Declare an array that holds 20 integers. Read the 20 integers from

the file

into the array.

6. Write a function that accepts the filled array as a parameter and

determines the MAXIMUM value in the array.

Return the maximum value from the function (the function will be of

typeint).

7. Print ALL the array values AND print the maximum value in the array

using a range-based for loop. Use informational messages.

Ensure the output is readable.

Answer 1

#include <stdio.h>

#include <stdlib.h>

int maximum(int arr[], int n) {

    int max = arr[0];

    for (int i = 0; i < n; i++) {

        if(max < arr[i]) {

            max = arr[i];

        }

    }

    return max;

}

int main(void) {

    FILE *fptr;

char filename[20], ch;

    int arr[20], i = 0, max;

printf("Enter the filename to be opened \n");

scanf("%s", filename);

/* open the file for reading */

fptr = fopen(filename, "r");

if (fptr == NULL) {

printf("Cannot open file \n");

exit(0);

}

while (ch != EOF) {

        fscanf(fptr, "%d", &arr[i]);

        i++;

        ch = fgetc(fptr);

}

fclose(fptr);

    max = maximum(arr, 20);

    printf("Array is:\n");

    for (i = 0; i < 20; i++) {

        printf("%d ", arr[i]);

    }

    printf("\nMaximum element: %d", max);

}

FOR HELP PLEASE COMMENT. THANK YOU.