Compilare: user.cpp: In function ‘int main()’: user.cpp:64:17: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d ",k); ^ user.cpp:38:8: warning: unused variable ‘n’ [-Wunused-variable] int n,op,x,a1,a2,a3,a4,a5,mi,ma; ^ user.cpp:38:10: warning: unused variable ‘op’ [-Wunused-variable] int n,op,x,a1,a2,a3,a4,a5,mi,ma; ^ user.cpp:38:13: warning: unused variable ‘x’ [-Wunused-variable] int n,op,x,a1,a2,a3,a4,a5,mi,ma; ^ user.cpp:38:30: warning: unused variable ‘mi’ [-Wunused-variable] int n,op,x,a1,a2,a3,a4,a5,mi,ma; ^ user.cpp:38:33: warning: unused variable ‘ma’ [-Wunused-variable] int n,op,x,a1,a2,a3,a4,a5,mi,ma; ^ user.cpp:39:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eqs.in","r",stdin); ^ user.cpp:40:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eqs.out","w",stdout); ^ user.cpp:42:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d",&a1,&a2,&a3,&a4,&a5); ^