C Programming. Allocate memory dynamically using malloc() / calloc() functions.

Program to find sum and average of n elements entered by the user. Allocate memory dynamically using malloc() / calloc() functions.

// Program to find sum and average of n elements entered by the user.

// Allocate memory dynamically using malloc()/calloc() functions.

#include<stdio.h>

#include<stdlib.h>

int main() {

    int n, i, sum=0;

    float avg;

    printf("Enter the number of elements : ");

    scanf("%d",&n);

    int *p = (int *)calloc(n, sizeof(int));

    for (i=0; i<n; i++){

        printf("\nEnter the %dth element : ", i+1);

        scanf("%d", &p[i]);

    }

    for (i=0; i<n; i++){

        sum += p[i];

    }

    avg = (float)sum / n;

    printf("\nThe sum of %d elements is : %d\nAverage is : %0.2f ", n, sum, avg);

    return 0;

}

Output :

Enter the number of elements : 5 Enter the 1th element : 4 Enter the 2th element : 3 Enter the 3th element : 5 Enter the 4th element : 7 Enter the 5th element : 3 The sum of 5 elements is : 22 Average is : 4.40