Replaced dynamic arrays with std::vector ,works on linux ..needs to be tested on windows after clearing up the lnk2019 error

src/utils.cpp

@@ -170,7 +170,6 @@ void getMemUsage(double& vm_usage_kb, double& resident_set_kb){
    using std::ios_base;
    using std::ifstream;
    using std::string;
-   SYSTEM_INFO sysInfo;
 
    vm_usage_kb     = 0.0;
    resident_set_kb = 0.0;
@@ -195,6 +194,7 @@ void getMemUsage(double& vm_usage_kb, double& resident_set_kb){
 #ifdef __linux__
    long page_size_kb = sysconf(_SC_PAGE_SIZE) / 1024; // in case x86-64 is configured to use 2MB pages
 #elif _WIN32
+SYSTEM_INFO sysInfo;
  long page_size_kb = sysInfo.dwPageSize/1024;
 #endif