[c++] Getting an error "fopen': This function or variable may be unsafe." when compling

I'm receiving this error when compiling:

'fopen': This function or variable may be unsafe. 
Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS.

I'm new to C++ and open CV, therefore please help me to get rid of this error.

Thanks

void _setDestination(const char* name)
{
    if (name==NULL) {
        stream = stdout;
    }
    else {
        stream = fopen(name,"w");
        if (stream == NULL) {
            stream = stdout;
        }
    }
}

This is a warning for usual. You can either disable it by

#pragma warning(disable:4996)

or simply use fopen_s like Microsoft has intended.

But be sure to use the pragma before other headers.