Compilare: user.cpp: In function ‘int main()’: user.cpp:26:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("jocul.in", "r", stdin); ^ user.cpp:27:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("jocul.out", "w", stdout); ^ user.cpp:29:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:32:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp:28:62: warning: ‘bmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n, i, j, s=0, x, maxval=0, difmin=MAXN*MAXV+1, amin, bmin; ^ user.cpp:28:56: warning: ‘amin’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n, i, j, s=0, x, maxval=0, difmin=MAXN*MAXV+1, amin, bmin; ^