Array Statistics Package
Medium
C
Functions
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Problem Statement
By passing an array to the function. Calculate Function: sum, average, min, max, range. Return values simultaneously using pointers (multiple output parameters).
Input Format
An array of numbers and its size.
Output Format
Calculated values returned using pointers:
• Sum
• Average
• Minimum
• Maximum
• Range
• Sum
• Average
• Minimum
• Maximum
• Range
Example
Array: [2, 4, 6, 8, 10]
Sum = 30 Average = 6 Min = 2 Max = 10 Range = 8
Constraints
• Array size ≥ 1
• Output values returned using pointers (multiple outputs)
• Output values returned using pointers (multiple outputs)
Concept Explanation
The function receives an array and calculates multiple results at once.
Pointers are used so the function can return more than one value.
Pointers are used so the function can return more than one value.
Step-by-Step Explanation
1.Create a function that accepts:
• Array
• Size of array
• Pointers for sum, average, min, max, range
2.Initialize:
• Sum = 0
• Min = first element
• Max = first element
3.Traverse the array from index 0 to size − 1.
4.For each element:
• Add value to sum.
• If value < min → update min.
• If value > max → update max.
5.After traversal:
• Calculate average = sum / size.
• Calculate range = max − min.
6.Store all calculated values using the respective pointers.
7.Return control to the calling function with all results updated.
• Array
• Size of array
• Pointers for sum, average, min, max, range
2.Initialize:
• Sum = 0
• Min = first element
• Max = first element
3.Traverse the array from index 0 to size − 1.
4.For each element:
• Add value to sum.
• If value < min → update min.
• If value > max → update max.
5.After traversal:
• Calculate average = sum / size.
• Calculate range = max − min.
6.Store all calculated values using the respective pointers.
7.Return control to the calling function with all results updated.
Concept Explanation
The function receives an array and calculates multiple results at once.
Pointers are used so the function can return more than one value.
Pointers are used so the function can return more than one value.
Step-by-Step Explanation
1.Create a function that accepts:
• Array
• Size of array
• Pointers for sum, average, min, max, range
2.Initialize:
• Sum = 0
• Min = first element
• Max = first element
3.Traverse the array from index 0 to size − 1.
4.For each element:
• Add value to sum.
• If value < min → update min.
• If value > max → update max.
5.After traversal:
• Calculate average = sum / size.
• Calculate range = max − min.
6.Store all calculated values using the respective pointers.
7.Return control to the calling function with all results updated.
• Array
• Size of array
• Pointers for sum, average, min, max, range
2.Initialize:
• Sum = 0
• Min = first element
• Max = first element
3.Traverse the array from index 0 to size − 1.
4.For each element:
• Add value to sum.
• If value < min → update min.
• If value > max → update max.
5.After traversal:
• Calculate average = sum / size.
• Calculate range = max − min.
6.Store all calculated values using the respective pointers.
7.Return control to the calling function with all results updated.
Input / Output Format
Input Format
An array of numbers and its size.
Output Format
Calculated values returned using pointers:
• Sum
• Average
• Minimum
• Maximum
• Range
• Sum
• Average
• Minimum
• Maximum
• Range
Constraints
• Array size ≥ 1
• Output values returned using pointers (multiple outputs)
• Output values returned using pointers (multiple outputs)
Examples
Input:
Array: [2, 4, 6, 8, 10]
Output:
Sum = 30
Average = 6
Min = 2
Max = 10
Range = 8
Example Solution (Public)
#include <stdio.h>
/* Function to calculate sum, average, min, max, range */
void calculateStats(int arr[], int n, int *sum, float *avg, int *min, int *max, int *range) {
int i;
*sum = 0;
*min = arr[0];
*max = arr[0];
for (i = 0; i < n; i++) {
*sum += arr[i];
if (arr[i] < *min) *min = arr[i];
if (arr[i] > *max) *max = arr[i];
}
*avg = (float)(*sum) / n;
*range = *max - *min;
}
int main() {
int n, i;
printf("Enter number of elements: ");
scanf("%d", &n);
int arr[n];
printf("Enter %d elements: ", n);
for (i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
int sum, min, max, range;
float avg;
calculateStats(arr, n, &sum, &avg, &min, &max, &range);
printf("nResults:n");
printf("Sum = %dn", sum);
printf("Average = %.2fn", avg);
printf("Minimum = %dn", min);
printf("Maximum = %dn", max);
printf("Range = %dn", range);
return 0;
}
Official Solution Code
#include <stdio.h>
/* Function to calculate sum, average, min, max, range */
void calculateStats(int arr[], int n, int *sum, float *avg, int *min, int *max, int *range) {
int i;
*sum = 0;
*min = arr[0];
*max = arr[0];
for (i = 0; i < n; i++) {
*sum += arr[i];
if (arr[i] < *min) *min = arr[i];
if (arr[i] > *max) *max = arr[i];
}
*avg = (float)(*sum) / n;
*range = *max - *min;
}
int main() {
int n, i;
printf("Enter number of elements: ");
scanf("%d", &n);
int arr[n];
printf("Enter %d elements: ", n);
for (i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
int sum, min, max, range;
float avg;
calculateStats(arr, n, &sum, &avg, &min, &max, &range);
printf("nResults:n");
printf("Sum = %dn", sum);
printf("Average = %.2fn", avg);
printf("Minimum = %dn", min);
printf("Maximum = %dn", max);
printf("Range = %dn", range);
return 0;
}
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