Відповідь:

C code:

#include <stdio.h>

#include <math.h>

void input_arr(double *arr,const int size){

for(int i = 0; i < size; i++){

 printf("arr[%d]:",i );

 scanf("%f",&arr[i]);

}

}

void print_arr(double *arr,const int size){

for(int i = 0; i < size; i++){

 printf("%ft",arr[i]);

}

printf("n");

}

double average(double *arr,const int size){

double aver = 0;

for(int i = 0; i < size; i++){

 aver += arr[i];

}

return aver / size;

}

int count(double *arr,const int size){

double aver = average(arr,size);

int counter = 0;

for(int i = 0; i < size; i++){

 if(arr[i] > aver){

  counter++;

 }

}

return counter;

}

int position_first_negative(double *arr,const int size){

int index;

for(int i = 0; i < size; i++){

 if(arr[i] < 0){

  index = i;

  break;

 }

}

return index;

}

double sum(double *arr,const int size){

double sum_abs = 0;

int first_negative = position_first_negative(arr,size);

if(first_negative == 0 && arr[0] > 0){

 printf("Negative elements is not foundn");

}

else{

 for(int i = first_negative + 1; i < size; i++){

  sum_abs += fabs(arr[i]);  

 }

 return sum_abs;

}

}

int main(){

int size;

printf("Enter a size: ");

scanf("%d",&size);

double *arr = new double[size];

input_arr(arr,size);

print_arr(arr,size);

printf("Count elements:%dn ",count(arr,size));

printf("Sum abs:%f",sum(arr,size));

delete[] arr;

return 0;

}