concurs2.cpp: In function 'void create_pos(int)': concurs2.cpp:27: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x concurs2.cpp:27: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x concurs2.cpp: In function 'int main()': concurs2.cpp:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result concurs2.cpp:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result concurs2.cpp:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result concurs2.cpp:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result concurs2.cpp:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result