Compilare: user.cpp: In function ‘void init()’: user.cpp:14:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d",&n,&m); ^ user.cpp:22:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d%d",&x,&y,&cst); ^ user.cpp: In function ‘int main()’: user.cpp:47:20: warning: ‘vMin’ may be used uninitialized in this function [-Wmaybe-uninitialized] use[vMin]=1; ^