Compilare: user.cpp: In function ‘void print(int, int, int, int)’: user.cpp:13:14: warning: unused variable ‘flag’ [-Wunused-variable] int a=0, flag=0, u=x, v=y, w=z; ^ user.cpp: In function ‘int main()’: user.cpp:57:10: warning: statement has no effect [-Wunused-value] for(m;m>0;m--){ ^ user.cpp:54:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ user.cpp:55:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&x,&y,&z); ^ user.cpp:56:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&u,&v,&w); ^ user.cpp:58:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&a,&b,&c); ^