Compilare: user.cpp: In function ‘void lee(int, int)’: user.cpp:18:11: warning: unused variable ‘h’ [-Wunused-variable] int k,h,ok; ^ user.cpp: In function ‘void leeafis(int, int)’: user.cpp:39:11: warning: unused variable ‘h’ [-Wunused-variable] int k,h,ok; ^ user.cpp: In function ‘int main()’: user.cpp:62:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&m,&n); ^ user.cpp:66:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i][j]); ^