Написать на языке с++ сформировать массив а из n элементов. вывести массив на экран. определить, есть ли в массиве a элементы , равные числу m.

#include <iostream>
#include <ctime>
#include <stdlib.h>
using namespace std;

int main()
{
    srand(time(0));
    int N;
    cout << "N = ", cin >> N;
    int A[N];
    cout << "A("<<N<<"):";
    for(int i = 0; i < N; i++)
        cout <<" "<< (A[i] = rand() % (N*2+1) -N);
    int M, B = 0;
    cout <<"\nM = ", cin >> M;
    for(int i = 0; i < N; i++)
        if (A[i] == M) B = 1;
    cout << (B?"DA":"NET");
    return 0;
}

#include <stdio.h>

int main(void) {
 int a1,a2,b,k1=0,k2=0;
 printf("a1 = ");
 scanf("%d",&a1);
 printf("a2 = ");
 scanf("%d",&a2);
 if (a1>0) b=a1; else b=-a1;
 while (b>0) {
  k1++; b /= 10;
 }
 if (a2>0) b=a2; else b=-a2;
 while (b>0) {
  k2++; b /= 10;
 }
 if (k1>k2) printf("В числе %d больше цифр, чем в числе %d",a1,a2);
 else if (k2>k1) printf("В числе %d больше цифр, чем в числе %d",a2,a1);
  else printf("Количество цифр в числах одинаково");
 return 0;
}

Пример:
a1 = 153
a2 = -4680
В числе -4680 больше цифр, чем в числе 153

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вот удачи))