Compilare: main.cpp: In function 'int main()': main.cpp:16:12: warning: unused variable 'n' [-Wunused-variable] int i, n, now, na, nb, j, k, p, poz, st; ^ main.cpp:16:28: warning: unused variable 'j' [-Wunused-variable] int i, n, now, na, nb, j, k, p, poz, st; ^ main.cpp:13:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("potrivire.in", "r", stdin); ^ main.cpp:14:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("potrivire.out", "w", stdout); ^ main.cpp:18:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d ", &na, &nb); ^ main.cpp:19:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%s%s", a, b); ^ main.cpp:66:37: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized] printf ("%d %d", st, poz + k - 1); ~~~~^~~