Compilare: user.cpp: In function ‘void arie()’: user.cpp:35:15: warning: unused variable ‘j’ [-Wunused-variable] long long j = 0; ^ user.cpp: In function ‘int main()’: user.cpp:48:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("reuniune.in","r",stdin); ^ user.cpp:51:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &a[i][j].fs, &a[i][j].sc); ^ user.cpp:69:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("reuniune.out","w",stdout); ^