Compilare: user.cpp: In function ‘void umplere()’: user.cpp:161:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i <= 2 * cordx.size(); i++) ^ user.cpp:163:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j <= 2 * cordy.size() + 1; j++) ^ user.cpp: In function ‘void citire()’: user.cpp:29:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ user.cpp:30:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &m, &p); ^ user.cpp:34:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &tmp1, &tmp2, &tmp3, &tmp4); ^ user.cpp: In function ‘int main()’: user.cpp:182:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("colaj.in", "r", stdin); ^