Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:51:9: error: ‘sum’ was not declared in this scope sum += v[i]; ^ user.cpp:60:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (ma - mi == j - i) ^ user.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cool.in", "r", stdin); ^ user.cpp:11:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cool.out", "w", stdout); ^ user.cpp:14:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d %d", &var, &n, &k, &v[1]); ^ user.cpp:17:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &v[i]); ^