Compilare: user.cpp: In function ‘int main()’: user.cpp:27:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j, a, b; ^ user.cpp:27:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, a, b; ^ user.cpp:27:15: warning: unused variable ‘a’ [-Wunused-variable] int i, j, a, b; ^ user.cpp:27:18: warning: unused variable ‘b’ [-Wunused-variable] int i, j, a, b; ^ user.cpp:28:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("interzis.in", "r", stdin); ^ user.cpp:29:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("interzis.out", "w", stdout); ^ user.cpp:30:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &l); ^ user.cpp:31:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s); ^