Compilare: user.cpp: In function ‘int main()’: user.cpp:11:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin ,"%d" ,&n); ^ user.cpp:14:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin ,"%d" ,&v[i]); ^ user.cpp:39:21: warning: ‘incep’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(prec[incep]!=0) ^ user.cpp:29:19: warning: ‘pr’ may be used uninitialized in this function [-Wmaybe-uninitialized] prec[i]=pr; ^