Compilare: user.cpp: In function ‘int main()’: user.cpp:34:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:37:124: 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",&vect[i][0].x,&vect[i][0].y,&vect[i][1].x,&vect[i][1].y,&vect[i][2].x,&vect[i][2].y); ^ user.cpp:40:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&fx,&fy); ^ user.cpp:31:11: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n,pos; ^