Input numbers by keyboard into array but only 1 line - c++

Question

Is there any way to enter numbers (seperated by spaces) on a single line into an array ? I mean, I used to write like this:
First, I entered sizeofarray. Then, I used [for] loop to enter each number into each element. In this method, I had to press enter for each time
So what I want is:
First, enter sizeofarray. Then, on a single line, enter all numbers for all elements, each of it seperated by a space
Ex: 7, enter
1 5 35 26 5 69 8, enter
So that all numbers are stored into elements dedicated.
I know my English is not good and I'm not a good coder. So please explain it easy. Thanks :D

Answer 1

I don't know why everyone is trying to do it in String way..
it's simple that C++ std::cin can get it so easy
int main (){
int a[1000],sizeOfA;
cin>>sizeOfA;
for (int i=0;i<sizeOfA;i++)
cin>>a[i];

Answer 2

If you are going to enter all numbers in a single line, then it is completely unnecessary to begin by entering the number of numbers that will follow.
You are going to need to read the entire line into a string, (char[]) and then parse that string to find substrings separated by spaces, and then you are going to need to parse each substring into a number.
Precisely how to do this, we won't tell, because stackoverflow is not about having others do your homework for you.

Answer 3

Read in the input as a string, then split by spaces to get the individual numbers:
int main()
{
using namespace std;
int* nums;
int size;
cout << "Enter size of array";
cin >> size;
nums = new int[size];
string input;
cout << "Enter numbers, separated by single space:\n";
getline(cin, input);
istringstream iss(input);
string s;
int i = 0;
while (getline(iss, s, ' ') && i < size) {
int num = atoi(s.c_str());
nums[i] = num;
printf("%d\n", num);
++i;
}
return 0;
}

Answer 4

the most optimal and safe way is use containers, iterators and streams. If 'istream_iterator ' extract from the stream value other than 'int', it will be equal to 'end', so reading from the stream being to the first non-int, or until the end
#include <string>
#include <vector>
#include <iostream>
#include <sstream>
int main()
{
using namespace std;
size_t size = 0;
cin >> size;
cin.ignore();
string buffer;
getline(cin, buffer);
stringstream ss(buffer);
istream_iterator<int> iter(ss);
istream_iterator<int> end;
vector<int> vec;
vec.reserve(size);
for (size_t i = 0; i < size && iter != end; ++i, ++iter)
{
vec.push_back(*iter);
}
}