ACM and eclipse for C ++ configure the mingw GCC compiler. Differences between vs compiler and GCC

I recently practiced the questions above ACM.

If the run result is named correctly, it cannot be passed.

I think it is a problem with the compiler.

ACM is generally a GCC compiler.

It seems that it is better to use eclipse.

Next to eclipse for C ++ on the official website

Next, the GCC compiler for mingw.

Configuration is OK.

Use of eclipse for C ++:

1. if an error occurs during running, first build and then run.

2. If you are prompted that you do not have the access permission during running, end the C ++ file you wrote in the Process Manager.Program.

Vs compiler and GCC

Difference 1 malloc initialization:

Int * s;

S = (int *) malloc (strnum * sizeof (INT ));

This method is used to generate an array. In vs, It is not initialized, that is, it is placed with unknown content.

In GCC, the initialization is 0!