Compiler error: invalid conversion from 'int' to 'int*' [-fpermissive]|

Question

I got a compiler error:

main.cpp|59|error: invalid conversion from \'int\' to \'int*\' [-fpermissive]|

The offending line is

Answer 1

Your error is in this line:

int *pComienzo = vector, *pFinal = vector[nElementos-1];

The reason for this is that vector is an int*, but vector[nElementos - 1] is a regular int. Thus the declaration

int *pFinal = vector[nElementos - 1];

is trying to assign the integer value at the last index of vector to the pointer pFinal, hence the compiler error.

To fix this, you may want to do either

int *pFinal = &vector[nElementos - 1];

which makes pFinal point to the last element of vector, or

int *pFinal = vector + (nElementos - 1);

which accomplishes the same thing using pointer arithmetic.

That said, since you're working in C++, why not use the provided std::vector type and avoid working with pointers altogether?

Hope this helps!