Compilare: user.cpp: In function ‘void PD()’: user.cpp:60:14: warning: left operand of comma operator has no effect [-Wunused-value] for(i=N;i>=1,next!=0;i--){ ^ user.cpp: In function ‘void Citire()’: user.cpp:10:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d\n",&N); ^ user.cpp:12:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^