Compilare: user.cpp: In function ‘int main()’: user.cpp:136:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &len, &n); ^ user.cpp:137:18: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(Txt + 1); ^ user.cpp:141:19: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(Word); ^ /tmp/cc8ahngS.o: In function `main': user.cpp:(.text.startup+0x3b): warning: the `gets' function is dangerous and should not be used.