Compilare: main.cpp: In member function 'void BigInt::aduna(BigInt&)': main.cpp:14:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.cif.size();i++) ~^~~~~~~~~~~~~ main.cpp:18:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<cif.size();i++){ ~^~~~~~~~~~~ main.cpp: In member function 'void BigInt::afis()': main.cpp:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<cif.size();i++) ~^~~~~~~~~~~ main.cpp: In member function 'BigInt& BigInt::operator=(int)': main.cpp:47:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<x.size();i++) ~^~~~~~~~~ main.cpp:49:5: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In member function 'BigInt& BigInt::operator=(BigInt)': main.cpp:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.cif.size();i++) ~^~~~~~~~~~~~~ main.cpp:56:5: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:63:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("expozitie.in","r",stdin); ^ main.cpp:64:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("expozitie.out","w",stdout); ^ main.cpp:68:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lli %lli %lli",&n,&d,&k); ^