Compilare: user.cpp: In function ‘int main()’: user.cpp:78:39: warning: format ‘%f’ expects argument of type ‘float*’, but argument 3 has type ‘int*’ [-Wformat=] sscanf(line, "%f %f", &xf, &yf); ^ user.cpp:78:39: warning: format ‘%f’ expects argument of type ‘float*’, but argument 4 has type ‘int*’ [-Wformat=] user.cpp:91:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < puncte.size(); i++) { ^ user.cpp:92:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i + 1; j < puncte.size(); j++) { ^ user.cpp:63:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(IN_FILE, "r", stdin); ^ user.cpp:64:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(OUT_FILE, "w", stdout); ^ user.cpp:66:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int N; scanf("%d\n", &N); ^ user.cpp:73:19: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(line); ^ /tmp/cct9PxF1.o: In function `main': user.cpp:(.text.startup+0xe3): warning: the `gets' function is dangerous and should not be used.