Compilare: user.cpp: In function ‘int main()’: user.cpp:39:9: warning: unused variable ‘poz’ [-Wunused-variable] int poz,lg; ^ user.cpp:39:13: warning: unused variable ‘lg’ [-Wunused-variable] int poz,lg; ^ user.cpp:41:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%d %d %d %d",&n,&m,&w,&h); ^ user.cpp:44:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%d %d",&a,&b); ^ user.cpp:55:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%d %d",&a,&b); ^