Slip 23 - B) Accept n integers in an array. Copy only the non-zero elements to another array (allocated using dynamic memory allocation). Calculate the sum and average of non-zero elements.

Solution:

#include<stdio.h>

#include<stdlib.h>

void main(){

        int a[30], i,n, sum = 0;

    int count=0;

    int *ptr;

    float avg;

        printf("\n Enter the total number of elements you want to enter : ");

    scanf("%d",&n);

                printf("\n Enter element in aaray");

        for(i = 0;i<n;i++){

        scanf("%d",&a[i]);       }

    for(i = 0;i<n;i++){

            if(a[i]!=0){

                                                  count++;   }

    }

    ptr = (int *)malloc(count * sizeof(int));

    for(i = 0;i<n;i++){

            if(a[i]!=0){

        *(ptr+i)=a[i];

                sum=sum+*(ptr+i);        }

                }

    avg=sum/count;

    printf("sum is %d \n",sum);

        printf("avg is %f\n",avg);

        getch();   

  }