Compilare: user.cpp: In function ‘void aflareCuStiva()’: user.cpp:57:69: warning: operation on ‘varf’ may be undefined [-Wsequence-point] Sol = max (Sol, Stiva[varf] * (i - Poz[--varf] - 1)); ^ user.cpp:69:69: warning: operation on ‘varf’ may be undefined [-Wsequence-point] Sol = max (Sol, Stiva[varf] * (Poz[--varf] - i - 1)); ^ user.cpp: In function ‘void citire()’: user.cpp:15:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (f, "%d %d", &N, &M); ^ user.cpp:18:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (f, "%d ", &A[i][j]); ^