Compilare: user.cpp: In function ‘void delFromVec(int, int)’: user.cpp:25:13: warning: unused variable ‘vec’ [-Wunused-variable] int vec = *it ; ^ user.cpp: In function ‘int main()’: user.cpp:110:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 1 ; i < pargEuler.size() ; ++i ){ ^ user.cpp:73:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ratway.in","r",stdin); ^ user.cpp:74:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ratway.out","w",stdout); ^ user.cpp:76:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&noNodes , &noMuc ); ^ user.cpp:80:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^