Compilare: user.cpp: In member function ‘void nr_real::codificare()’: user.cpp:104:18: warning: left operand of comma operator has no effect [-Wunused-value] nr1*10,nr1+=cifre[i]-'0'; ^ user.cpp: In function ‘int main()’: user.cpp:162:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("coduri.in","r",stdin); ^ user.cpp:163:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("coduri.out","w",stdout); ^ user.cpp:165:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld ",&n); ^ user.cpp: In member function ‘void nr_real::citire(FILE*)’: user.cpp:29:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%s ",cifre); ^