Compilare: user.cpp: In function ‘int main()’: user.cpp:40:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:49:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&c[i]); ^ user.cpp:88:18: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] ras[ras1].y=y; ^ user.cpp:117:5: warning: ‘ras1’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(i=1;i<=ras1;i++) ^