hi I'm trying to read that input
2
2
9 97
8 56
3
1 18 6
16 42 100
25 16 17
I can't get the numbers 9, 97, 8, 56 and store them in a vector of
here is my attempt
using namespace std;
int main() {
int test;
cin >> test;
while (test--)
{
int ss_i;
cin >> ss_i;
vector<int> A(ss_i*ss_i);
}
return 0;
}
You'll need to fill a string and then access the integers through a std::istringstream.
also consider push_back to store those integers into a vector:
#include <vector>
#include <iostream>
#include <string>
#include <sstream>
int main(){
int size{ 16 };
std::vector<int> numbers;
numbers.reserve(size); //reserve memory
for (int i = 0; i < size;){
std::string ss_i; //number(s) to push_back
std::cout << "Type in " << size - i << " more integers: ";
std::getline(std::cin, ss_i);
std::istringstream stringstream(ss_i); //load into stream
int n;
while (stringstream >> n){
i++;
numbers.push_back(n); //add to the vector
}
}
std::cout << "The vector contains:\n";
for (auto i : numbers){
std::cout << i << ' ';
}
return 0;
}
Example Run:
Type in 16 more integers: 2
Type in 15 more integers: 2
Type in 14 more integers: 9 97
Type in 12 more integers: 8 56
Type in 10 more integers: 3
Type in 9 more integers: 1
Type in 8 more integers: 18 6
Type in 6 more integers: 16 42
Type in 4 more integers: 100 25 16 17
The vector contains:
2 2 9 97 8 56 3 1 18 6 16 42 100 25 16 17
