anagrame.cpp: In function 'void plus(int)': anagrame.cpp:11: warning: unused variable 'e' anagrame.cpp: In function 'int main()': anagrame.cpp:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result anagrame.cpp:30: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result anagrame.cpp:31: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result /tmp/cc1yXzsq.o: In function `main': anagrame.cpp:(.text+0x166): warning: the `gets' function is dangerous and should not be used.