Compilare: user.cpp: In function ‘int main()’: user.cpp:54:9: warning: unused variable ‘n’ [-Wunused-variable] int n, i, j, s, t, d, k; ^ user.cpp:54:18: warning: unused variable ‘s’ [-Wunused-variable] int n, i, j, s, t, d, k; ^ user.cpp:54:24: warning: unused variable ‘d’ [-Wunused-variable] int n, i, j, s, t, d, k; ^ user.cpp:51:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sase49.in","r",stdin); ^ user.cpp:52:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sase49.out","w",stdout); ^ user.cpp:56:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:60:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&k); ^