Compilare: user.cpp: In function ‘int main()’: user.cpp:34:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d%d" ,&n,&m,&k,&e); ^ user.cpp:37:77: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d%d%d" ,&Q[i].tip,&Q[i].x,&Q[i].y,&Q[i].st,&Q[i].en); ^ user.cpp:41:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&Q[i].v); ^