Compilare: main.cpp: In function 'int main()': main.cpp:152:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dreptunghi3.in", "r", stdin); ^ main.cpp:153:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dreptunghi3.out", "w", stdout); ^ main.cpp:155:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%hd %s", &CERINTA, s + 1); ^