Question

Write a C program to do the following
1) request user to enter 10 integer into an array

2) sort the array in ascending order

3) display the sorted array

4) count the number of odd and even number in the array and print out the result

5) add the value of the odd number and even number and calculate the average of the odd and even number. display the result

6) write function addNumber() to add all the number in the array. return the value to main() and prints the result

Answer 1

C Program:

Output Snapshot:

Text Code:

#include <stdio.h>
// Declaration of the function
int addNumber(int arr[], int n);

int main()
{
int arr[10], i, j, oddCount=0, evenCount=0, oddNumAvg, evenNumAvg;
  
// Request user to enter 10 integer into an array
printf("\n========= User Input =========\n");
for(i=0; i<10; i++){
printf("Enter arr[%d] :",i);
scanf("%d", &arr[i]);
}

// Sort the array in ascending order (using Bubble Sort)
for (i=0; i< 9; i++){
for (j = 0; j < 10-i-1; j++){
if (arr[j] > arr[j+1]){
// Swapping the arr[j] and arr[j+1]
int temp = arr[j];
arr[j] = arr[j+1];
arr[j+1] = temp;
}
}
}
  
// Displaying the sorted array
printf("========= Sorted Array =========");
for(i=0; i<10; i++){
printf("\narr[%d] : %d",i, arr[i]);
}
  
// count the number of odd and even number in the array and print out the result
printf("\n===== Even/Odd Number Count =====");
for(i=0; i<10; i++){
if(arr[i]%2==0){ // When array element is even
evenCount++;
} else { // When array element is odd
oddCount++;
}
}
printf("\nEven Number Count : %d", evenCount);
printf("\nOdd Number Count : %d", oddCount);
  
// Add the value of the odd number and even number and calculate the average
// of the odd and even number. display the result
printf("\n===== Sum of Even/Odd Number =====");
int sumEven = 0, sumOdd = 0;
for(i=0; i<10; i++){
if(arr[i]%2==0){
sumEven = sumEven + arr[i];
} else {
sumOdd = sumOdd + arr[i];
}
}
printf("\nEven Number Average : %f", ((float)sumEven/evenCount));
printf("\nOdd Number Average : %f", ((float)sumOdd/oddCount));
  
// Add all the numbers in the array and return the sum
printf("\n===== Sum of All Numberin Array =====");
printf("\nSum of all the numbers : %d", addNumber(arr,10));
return 0;
}

// User-defined function to add all the array elements and return its summation
int addNumber(int arr[], int n){
int i, sum = 0;
for(i=0; i<n; i++){
sum = sum + arr[i];
}
return sum;
}

Explanation:

• To sort the array in ascending order, Bubble Sort has used in the code, it is the simplest of all the sorting algorithm, which compares the adjacent element and swap if previous element is larger than the next element.
• The variable used in the code are as per the its use.
• In each step, there is separate for loops are used for the simplicity and understandability of the code.
• Please refer code comments for the understanding purpose.