Compilare: user.cpp: In function ‘void print(int, int, int)’: user.cpp:26:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x == n){ ^ user.cpp: In function ‘int main()’: user.cpp:50:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= n; ++i){ ^ user.cpp:86:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = st; i <= dr; ++i) ^ user.cpp:47:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("summax.in", "r", stdin); ^ user.cpp:48:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("summax.out", "w", stdout); ^ user.cpp:49:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &v, &n, &st, &dr); ^ user.cpp:52:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^