Compilare: user.cpp: In function ‘int main()’: user.cpp:89:9: warning: unused variable ‘f’ [-Wunused-variable] int f = 1; ^ user.cpp:81:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(l,"%d",&k); ^ user.cpp:82:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(l,"%d",&n); ^ user.cpp:85:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(l,"%d %d",&e[i].x,&e[i].y); ^ user.cpp:88:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(l,"%d",&m); ^ user.cpp:92:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(l,"%d %d",&p[i].x,&p[i].y); ^