Compilare: main.cpp: In function 'int main()': main.cpp:13:34: warning: unused variable 'good' [-Wunused-variable] int i , j , nr , bit , val , good , curr; ^~~~ main.cpp:14:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&b); ^ main.cpp:19:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&a[i][j]); ^