Compilare: user.cpp: In function ‘int main()’: user.cpp:6:8: warning: unused variable ‘j’ [-Wunused-variable] int i,j, n=49,t,tests; ^ user.cpp:6:11: warning: unused variable ‘n’ [-Wunused-variable] int i,j, n=49,t,tests; ^ user.cpp:7:34: 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:8:36: 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:9:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &tests); ^ user.cpp:18:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &nr); ^