Compilare: main.cpp: In function 'int main()': main.cpp:177:7: warning: unused variable 'init' [-Wunused-variable] int init = f.get(); ^~~~ main.cpp:180:7: warning: unused variable 'step' [-Wunused-variable] int step = 0; ^~~~ main.cpp:156:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("critice.in", "r", stdin); ^ main.cpp:157:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("critice.out", "w", stdout); ^ main.cpp:159:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ main.cpp:167:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &a, &b, &c); ^