Compilare: user.cpp: In function ‘int main()’: user.cpp:21:39: warning: unused variable ‘g’ [-Wunused-variable] FILE *f=fopen("semipal.in","r"), *g=fopen("semipal.out","w"); ^ user.cpp:22:19: warning: unused variable ‘p’ [-Wunused-variable] int i, t, it ,p , n, k; ^ user.cpp:23:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%i", &t); ^ user.cpp:27:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i%i", &n, &k); ^