Compilare: user.cpp: In function ‘int main()’: user.cpp:82:102: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d%d%d%d%d%d%d%d%d",&n,&t.x,&t.y,&l1.x,&l1.y,&l2.x,&l2.y,&r1.x,&r1.y,&r2.x,&r2.y); ^ user.cpp:85:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&k); ^ user.cpp:91:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&m.x,&m.y); ^