I tried to declare vetor in predefine ? why it showing error?

#1

vectorv;
v.reserve(4);
vector v{1,2,3,4};

#2

@kailash_01 hey you can do vector<int> v {1, 2, 3, 4} for declaring and initialising a new vector.
for adding values to a vector that has been declared already, use v.push_back(value);
note: push_back() function will append values to the end of the vector and increase vector size by 1.

if you are trying to read user input into a vector, you can do this instead

vector<int> v;
cin >> n;
for (int i = 0; i < n; i++) {
int data;
cin >> data;
v.push_back(data);
}

#3

@kailash_01 i hope i have solved your problem. please mark this doubt as resolved if you are satisfied

#4

Hi Kailash since you are not responding to this thread I am marking your doubt as resolved for now. You can always reopen it if you want.

#5

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