Compilare: main.cpp: In function 'int main()': main.cpp:14:10: warning: unused variable 'j' [-Wunused-variable] int i, j ; ^ main.cpp:12:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secv7.in", "r", stdin) ; ^ main.cpp:13:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secv7.out", "w", stdout) ; ^ main.cpp:15:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n) ; ^ main.cpp:17:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",v2 + i) ; ^ main.cpp:36:54: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d \n%d %d", minn, a % n + (a % n == 0), b % n + (b % n == 0)) ; ~~^~~ main.cpp:36:32: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d \n%d %d", minn, a % n + (a % n == 0), b % n + (b % n == 0)) ; ~~^~~