#include<iostream>
#include<vector>
#include<array>
int main(){
using namespace std;
double a1 = {1.2,2.4,3.6,4.8};
vector<double> a2(3);
array<double,5> a3;
}
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prog.cpp: In function 'int main()':
prog.cpp:7:33: error: scalar object 'a1' requires one element in initializer
double a1 = {1.2,2.4,3.6,4.8};
^