# Answer to Question #2680 in C++ for SinaN

Question #2680

Question 1 : There is an array a [20] of float numbers, Enter number in the array. Find the sum of negative number.

Question 2 : Enter 10 integer numbers in the array a [10]. Find the sum of positive numbers.

This question can you help me. plaese

Question 2 : Enter 10 integer numbers in the array a [10]. Find the sum of positive numbers.

This question can you help me. plaese

Expert's answer

#include <iostream>

#include <time.h>

using namespace std;

float a[20]; // The required array of float numbers

// Printing the array

void print_array(float a[], const int count);

int main()

{

srand(time(0));

// Putting the random float numbers into the array

int znak;

for (int i = 0; i < 20; i++)

{

& znak = rand()%2;

& a[i] = float(rand()) / 357 * (znak == 1 ? -1 : 1);

}

cout << "The array is: ";

print_array(a, 20);

cout << endl;

// Finding the sum of negative number:

float negsum = 0;

for (int i = 0; i < 20; i++)

& if (a[i] < 0)

& negsum += a[i];

cout << "The sum of negative numbers is: " << negsum << endl;

// Entering 10 random int numbers instead of 10th-19th elements of the array a

for (int i = 10; i < 20; i++)

{

& znak = rand()%2;

& a[i] = rand() / 100 * (znak == 1 ? -1 : 1);

}

cout << "Now array is :";

print_array(a, 20);

cout << endl;

// Finding the sum of the positive numbers

float sum = 0;

for (int i = 0; i < 20; i++)

& if (a[i] > 0)

& sum += a[i];

cout << "The sum of positive numbers is: " << sum << endl << endl;

return 0;

}

// Printing the array

void print_array(float a[], const int count)

{

cout << endl;

for (int i = 0; i < count; i++)

& cout << a[i] << ", ";

cout << endl;

}

//int znak;

//int matrix[N][M];

//for(int i=0;i<N;i++)

//for(int j=0;j<M;j++)

//{

//znak=rand()%2;

//matrix[i][j]=rand()%100 * (znak==1?-1:1);

//}

//int sum;

//int negsum;

//for(i=0;i<N;i++)

//{

//sum=0;

//negsum=0;

//for(int j=0;j<M;j++)

//{

//cout<<matrix[i][j]<<'\t';

//if(matrix[i][j]<0) negsum+=matrix[i][j];

//else sum+=matrix[i][j];

//}

//cout<<"negsum="<<negsum<<'\t'<<"possum="<<sum<<endl;

//}

//}

#include <time.h>

using namespace std;

float a[20]; // The required array of float numbers

// Printing the array

void print_array(float a[], const int count);

int main()

{

srand(time(0));

// Putting the random float numbers into the array

int znak;

for (int i = 0; i < 20; i++)

{

& znak = rand()%2;

& a[i] = float(rand()) / 357 * (znak == 1 ? -1 : 1);

}

cout << "The array is: ";

print_array(a, 20);

cout << endl;

// Finding the sum of negative number:

float negsum = 0;

for (int i = 0; i < 20; i++)

& if (a[i] < 0)

& negsum += a[i];

cout << "The sum of negative numbers is: " << negsum << endl;

// Entering 10 random int numbers instead of 10th-19th elements of the array a

for (int i = 10; i < 20; i++)

{

& znak = rand()%2;

& a[i] = rand() / 100 * (znak == 1 ? -1 : 1);

}

cout << "Now array is :";

print_array(a, 20);

cout << endl;

// Finding the sum of the positive numbers

float sum = 0;

for (int i = 0; i < 20; i++)

& if (a[i] > 0)

& sum += a[i];

cout << "The sum of positive numbers is: " << sum << endl << endl;

return 0;

}

// Printing the array

void print_array(float a[], const int count)

{

cout << endl;

for (int i = 0; i < count; i++)

& cout << a[i] << ", ";

cout << endl;

}

//int znak;

//int matrix[N][M];

//for(int i=0;i<N;i++)

//for(int j=0;j<M;j++)

//{

//znak=rand()%2;

//matrix[i][j]=rand()%100 * (znak==1?-1:1);

//}

//int sum;

//int negsum;

//for(i=0;i<N;i++)

//{

//sum=0;

//negsum=0;

//for(int j=0;j<M;j++)

//{

//cout<<matrix[i][j]<<'\t';

//if(matrix[i][j]<0) negsum+=matrix[i][j];

//else sum+=matrix[i][j];

//}

//cout<<"negsum="<<negsum<<'\t'<<"possum="<<sum<<endl;

//}

//}

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