Compilare: user.cpp: In function ‘int main()’: user.cpp:54:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(j<=m) ^ user.cpp:37:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&n); ^ user.cpp:39:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%lf %lf " ,&D[i].x,&D[i].y); ^ user.cpp:40:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&m); ^ user.cpp:42:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%lf %lf " ,&W[i].x,&W[i].y); ^