Compilare: user.cpp: In function ‘void print()’: user.cpp:28:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 2; i < cycle.size(); ++ i) { ^ user.cpp: In function ‘int main()’: user.cpp:90:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < odd.size() - 1; i += 2) { ^ user.cpp:69:18: warning: unused variable ‘j’ [-Wunused-variable] int n, m, i, j, count, a, b; ^ user.cpp:69:21: warning: unused variable ‘count’ [-Wunused-variable] int n, m, i, j, count, a, b; ^ user.cpp:67:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("johnie.in", "r", stdin); ^ user.cpp:68:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("johnie.out", "w", stdout); ^ user.cpp:72:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:74:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &a, &b); ^