Compilare: main.cpp: In function 'int main()': main.cpp:17:17: warning: variable 'x' set but not used [-Wunused-but-set-variable] int n,m,i,j,x,y; ^ main.cpp:20:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&m); ^ main.cpp:22:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&c[i].x,&c[i].y); ^ main.cpp:24:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&b[i].x,&b[i].y); ^ main.cpp:27:29: warning: 'mini' may be used uninitialized in this function [-Wmaybe-uninitialized] if (j==1 || mini>cost) ~~~~^~~~~