Compilare: main.cpp: In function 'void ciur()': main.cpp:14:9: warning: unused variable 'lim' [-Wunused-variable] int lim = sqrt(n); ^~~ main.cpp: In function 'void citire()': main.cpp:25:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ main.cpp: In function 'int main()': main.cpp:58:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ciurulet.in", "r", stdin); ^ main.cpp:59:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ciurulet.out", "w", stdout); ^