Compilare: user.cpp: In function ‘void bs(int, int, int)’: user.cpp:45:14: warning: unused variable ‘last’ [-Wunused-variable] int med, last = 0; ^ user.cpp: In function ‘int main()’: user.cpp:61:23: warning: unused variable ‘k’ [-Wunused-variable] int n, i, i1, i2, k = 0; ^ user.cpp:59:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nrtri.in", "r", stdin); ^ user.cpp:60:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nrtri.out", "w", stdout); ^ user.cpp:62:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:64:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &heap[i]); ^