Compilare: main.cpp: In function 'int main()': main.cpp:103:15: warning: unused variable 'cnt' [-Wunused-variable] int i, x, cnt, st, dr; ^~~ main.cpp:103:20: warning: unused variable 'st' [-Wunused-variable] int i, x, cnt, st, dr; ^~ main.cpp:103:24: warning: unused variable 'dr' [-Wunused-variable] int i, x, cnt, st, dr; ^~ main.cpp:101:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("vase.in", "r", stdin); ^ main.cpp:102:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("vase.out", "w", stdout); ^ main.cpp:105:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:107:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %c", &x, &c); ^ main.cpp:114:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^