Compilare: user.cpp: In function ‘void calc()’: user.cpp:88:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < poz.size(); ++i) ^ user.cpp:81:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp:85:9: warning: unused variable ‘r’ [-Wunused-variable] int r = 0; ^ user.cpp: In function ‘int main()’: user.cpp:96:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp:97:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.in", "r", stdin); ^ user.cpp:98:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.out", "w", stdout); ^ user.cpp: In function ‘void calcpot()’: user.cpp:59:28: warning: ‘el’ may be used uninitialized in this function [-Wmaybe-uninitialized] z[i] = min(z[i - el + 1], pmax - i + 1); ^