Compilare: user.cpp: In function ‘int perm(int, int, int)’: user.cpp:8:11: warning: unused variable ‘k’ [-Wunused-variable] int j,k,aux; ^ user.cpp:8:13: warning: variable ‘aux’ set but not used [-Wunused-but-set-variable] int j,k,aux; ^ user.cpp:16:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:28:17: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while( gata=1) ^ user.cpp:19:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("puzzle.in","r",stdin); ^ user.cpp:20:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("puzzle.out","w",stdout); ^ user.cpp:22:27: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets( a , 251, stdin); ^ user.cpp:25:26: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets( b, 251, stdin); ^ user.cpp: In function ‘int perm(int, int, int)’: user.cpp:9:5: warning: ‘j’ is used uninitialized in this function [-Wuninitialized] if(j<=poz) ^ user.cpp: In function ‘int main()’: user.cpp:33:19: warning: ‘i’ may be used uninitialized in this function [-Wmaybe-uninitialized] while( b[i] != p && i<=n) ^