Compilare: user.cpp: In function ‘int main()’: user.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<D.size();i++) a.push_back(D[i]); ^ user.cpp:59:23: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%ld\n",sum); ^ user.cpp:61:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a.size();i++){ ^ user.cpp:74:76: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%I64d %c\n%I64d %c",start.pos,start.op,stop.pos,stop.op); ^ user.cpp:74:76: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘long long int’ [-Wformat=] user.cpp:42:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vase.in","r",stdin); ^ user.cpp:43:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vase.out","w",stdout); ^ user.cpp:45:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld\n",&n); ^ user.cpp:47:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld %c\n",&x,&op); ^ user.cpp:54:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld",&targ); ^