Borderou de evaluare (job #510927)

Compilare: user.cpp: In function 'BigInt Integer(std::string)': user.cpp:41:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function 'BigInt Integer(char*)': user.cpp:52:2: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function 'BigInt operator+(BigInt, BigInt)': user.cpp:152:2: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:153:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:154:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function 'BigInt operator-(BigInt, BigInt)': user.cpp:188:2: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:189:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function 'BigInt operator*(BigInt, BigInt)': user.cpp:221:2: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:223:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:224:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function 'BigInt operator/(BigInt, BigInt)': user.cpp:250:42: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings] user.cpp: In function 'BigInt operator%(BigInt, BigInt)': user.cpp:297:42: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]