Compilare: user.cpp: In function ‘void Lps()’: user.cpp:14:9: warning: unused variable ‘i’ [-Wunused-variable] int i , j ; ^ user.cpp:14:13: warning: unused variable ‘j’ [-Wunused-variable] int i , j ; ^ user.cpp: In function ‘int main()’: user.cpp:59:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(j < n && pat [i] != v [j] ) ^ user.cpp:40:27: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (pat , NM , cin); ^ user.cpp:41:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (v , NM , cin); ^