Compilare: user.cpp: In function 'void ad(char*, int)': user.cpp:31: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void ad1(char*)': user.cpp:48: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void add(int)': user.cpp:60: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int ad2(char*)': user.cpp:70: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void add2()': user.cpp:86: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void citire()': user.cpp:101: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void sub(char*)': user.cpp:123: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void solve()': user.cpp:144: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void numara(char*)': user.cpp:154: warning: comparison between signed and unsigned integer expressions