Compilare: user.cpp: In function ‘int main()’: user.cpp:26:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i %i",&n,&m,&t); ^ user.cpp:30:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i",&en[i]); ^ user.cpp:36:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i %i",&a,&b,&c); ^ user.cpp:79:72: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] so<<rez[i-1].nr<<' '<<rez[j-1].nr<<' '<<rez[cmin-1].cal<<' '<<rez[k-1].cal<<'\n'; ^ user.cpp:79:32: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] so<<rez[i-1].nr<<' '<<rez[j-1].nr<<' '<<rez[cmin-1].cal<<' '<<rez[k-1].cal<<'\n'; ^