need help with Q4

Question 3: File Handling

Write a C program that reads data from a text file named "input.txt" containing integers separated by spaces. The program should calculate and display the average of these integers.

i have done this question but i need help to put this in Q4. here what I have for this Q.

#include

int main() {

FILE *file;

int num, sum = 0, count = 0;

// Open the file for reading

file = fopen("input.txt", "r");

// Check if the file is opened successfully

if (file == NULL) {

printf("Error opening the file. ");

return 1; // Exit the program with an error code

}

// Read integers from the file and calculate the sum and count

while (fscanf(file, "%d", &num) == 1) {

sum += num;

count++;

}

// Close the file

fclose(file);

// Check if any numbers were read from the file

if (count == 0) {

printf("No numbers found in the file. ");

return 1; // Exit the program with an error code

}

// Calculate and display the average

double average = (double)sum / count;

printf("Average: %.2lf ", average);

return 0; // Exit the program successfully

}

#include

int main() {

FILE *file = fopen("input.txt", "r");

int num, sum = 0, count = 0;

while (fscanf(file, "%d", &num) == 1) { sum += num; count++; }

fclose(file);

printf("Average: %.2lf ", count > 0 ? (double)sum / count : 0.0);

return 0;

Question 4: Comprehensive C Problem

Write a C program that performs the actions of Question 3, but outputs the result to another file.