Compilare: main.cpp: In function 'int main()': main.cpp:24:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ksort.in", "r", stdin); ^ main.cpp:25:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ksort.out", "w", stdout); ^ main.cpp:26:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] int n, k; scanf("%d %d", &n, &k); ^ main.cpp:28:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &aux[i].first); ^ main.cpp:87:15: warning: 'p2' may be used uninitialized in this function [-Wmaybe-uninitialized] move(p1, p2); ^ main.cpp:87:15: warning: 'p1' may be used uninitialized in this function [-Wmaybe-uninitialized]