Calculate the work of the honorary numbers

[Marcee]

Objective: I can't figure out why the code doesn't work:

#include <ctime>
#include <stdlib.h>
#include <stdio.h>
#include <corecrt_math.h>
#include <time.h>
int main(){

const int N = 20;

int arr[N];

//Заполнение случайными числами

srand(time(0));

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

{

arr[i] = rand() % 101 - 50; //[-50;50]

printf_s("arr[%d] = %d\n", i + 1, arr[i]);

}

//Обработка массива-произведение четных чисел массива

int dob = 1;

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

{

if (arr[i] % 2 == 0);

{

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

dob = dob * arr[i];

}
}
printf("\ndob = %d\n", dob);
return 0;

}

[irl]

Your main mistake is in this line: if (arr[i] % 2 == 0); a more specific ; I don't know who's supposed to be there if she's cleaned up, the code will work.

But naturally, it's not all the mistakes you made:

1. You import libraries you don't need.
2. When imported, you write <название.h>although these libraries do not require such a requirement
3. In the range of numbers [-50;50] You're using. intin which there are only four baytes that are almost always missing
4. No case processing 0And you need it that way. 0 % 2 == 0 Come back. truealthough 0 usually not counted as an even

I fixed these moments and the code came out like this:

#include <ctime>
#include <cstdlib>
#include <cstdio>
int main() {

const int N = 20;

int arr[N];

// Заполнение случайными числами

srand(time(0));

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

arr[i] = rand() % 101 - 50; //[-50;50]

printf_s("arr[%d] = %d\n", i + 1, arr[i]);

}

// Обработка массива - произведение четных чисел массива

long long dob = 1;

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

if (arr[i] % 2 == 0 && arr[i] != 0) {

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

dob = dob * arr[i];

}

}

printf("\ndob = %lld\n", dob);

return 0;

}

P.S. We can rewrite a little bit to read. Instead,

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

if (arr[i] % 2 == 0 && arr[i] != 0) {

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

dob = dob * arr[i];

}

}

Write that:

for (int i : arr) {

if (i % 2 == 0 && i != 0) {

printf("%d ", i);

dob = dob * i;

}

}