Compilare: user.cpp: In function ‘void Solve1()’: user.cpp:16:28: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[5001]’ [-Wformat=] fscanf(f,"%s",&a[i]); ^ user.cpp:17:34: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] nn=strlen(a[i]); a[i][nn]=NULL; nn--; ^ user.cpp:13:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d\n",&nr_prop); max=0; ^ user.cpp:16:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",&a[i]); ^ user.cpp: In function ‘void Read()’: user.cpp:36:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&p); ^