Error in the code

#1

why there is a compilation error ?

#2

helo @prerak_semwal
check now->

#3

@aman212yadav

what there’s no output

#4

reserve dont change size, ur vector size is still 0.\

use resize in place of reserve ,or use pushback for insertion

#5

@aman212yadav

is this the efficient way of storing integer inputs in vector (using reserve to counter the size doubling issue while using push_back)

#6

yes…
u an directly an n size vector and then read input like u do in array.

vector<int> v(n);
for(int i=0;i<n;i++)
   cin>>v[i];
```this  is also efficient
1 Like
#7

@aman212yadav

ok…I wasn’t aware of this method…thanks

#8

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