консольные приложения

#include <iostream>
#include <algorithm>
#include <iomanip>
 
int main()
{
    std::srand(std::time(nullptr));
    const std::size_t size = 20;
    int arr[size];
    std::generate(arr, arr + size, [] { return std::rand() % 21; });
    for(const auto& it: arr)
        std::cout << std::setw(4) << it;
    std::cout << std::endl;
    int sum = 0;
    for(std::size_t i = 0; (i < 10) && (i < 10); ++i)
        sum += arr[i];
    int sumMax = sum;
    std::size_t posFirst = 0, posLast = 10;
    //std::cout << "sum between 0 and 10 = " << sum << std::endl;
    for(std::size_t i = 10; i < size; ++i)
    {
        sum += arr[i];
        sum -= arr[i - 10];
        if(sum > sumMax)
        {
            sumMax = sum;
            posFirst = i - 9;
            posLast = i + 1;
        }
        //std::cout << "sum between " << i - 9 << " and " << i + 1<< " = " << sum << std::endl;
    }
    std::cout << "max sum between " << posFirst << " and " << posLast << " = " << sumMax << std::endl;
    return 0;
}

int ar[200];
int sum;
for(int i=0;i<200;i++){
ar[i]=random(100);
sum+=ar[i];
cout<<ar[i]<<" ";
 
}

#include<time.h>
#include<stdio.h>
#include<iostream.h>
#include <stdlib.h>
#include <conio.h>
#pragma argsused
int main(){
int ar[200];
int sum=0;
int sum1,position,g=0;
for(int i=0;i<200;i++){
ar[i]=random(100);
//sum+=ar[i];
cout<<ar[i]<<" ";
 
g++;
//cout<<"g=" <<g<<"\n";
if(g==9){g=0;sum1=0;}
sum1+=ar[i];
if(i==9){sum=sum1;}
if(sum1>sum ){
sum=sum1;
position=i;
 
}
 
}
cout<<"sum=" <<sum<<"\n"; cout<<"position="<<position-9<<"\n";
for(int k=(position-9);k<(position);k++){
cout<<ar[k]<<" ";
}
        return 0;
        getch();
        }