vector< int > v;
v.reserve(100);
for(int i=0;i<100;i++)
v[i] = i;
cout<<v.size();
then v.size give output zero but actually it must be print
100 because i initilized the memory by 0 to 99
Vector 02 method
hello @khemchandrs
a) that loop is just placing value at address v.begin()+i.and we are not getting error becuase we have reserved first 100 locations .starting from v.begin().
b) in order to reflect changes in ur size u need to use push_back function
read about reserve and resize function.
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