Compilare: main.cpp: In function 'int lcp(int, int)': main.cpp:36:11: warning: unused variable 'i1' [-Wunused-variable] int l,i1,j1; ^~ main.cpp:36:14: warning: unused variable 'j1' [-Wunused-variable] int l,i1,j1; ^~ main.cpp: In function 'int main()': main.cpp:49:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("ghicit.in", "r", stdin); ^ main.cpp:50:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ghicit.out", "w", stdout); ^ main.cpp:54:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c", &ch); ^ main.cpp:57:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c", &ch); ^