Compilare: user.cpp: In function ‘int main()’: user.cpp:44:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&n,&m,&p); ^ user.cpp:45:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&V,&E); ^ user.cpp:49:74: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {fscanf(f,"%d%d%d%d%d",&v[i].x[0],&v[i].y[0],&v[i].r,&v[i].t,&v[i].d); for(j=v[i].x[0]-v[i].r;j<=v[i].x[0]+v[i].r;j++)for(q=v[i].y[0]-v[i].r;q<=v[i].y[0]+v[i].r;q++){v[i].x[(j-v[i].x[0]+v[i].r)*(2*v[i].r+1)+q-v[i].y[0]+1+v[i].r]=j; v[i].y[(j-v[i].x[0]+v[i].r)*(2*v[i].r+1)+q-v[i].y[0]+1+v[i].r]=q;}} ^