C Programming slip 23

C Programming BCA Practical Slips Solution

Slip 23

Q1. Write a C program to accept n elements of 1D array and then display sum of

 all elements of array. [15 Marks]

#include <stdio.h>

  

int main() 

{ 

    int arr[10]; 

    int sum,i;

    printf("\nEnter elements : \n"); 

    for(i=0; i<10; i++) 

    { 

        printf("Enter arr[%d] : ",i); 

        scanf("%d",&arr[i]); 

    } 

         sum=0;

    for(i=0; i<10; i++)

    {

        sum=sum+arr[i];

    }

       

    printf("\nSum of array is     : %d"  ,sum); 

    return 0; 

}

Q2. 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. [25 Marks]

#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();      

  }