litere.cpp: In function `int main()': litere.cpp:49: warning: comparison between signed and unsigned integer expressions litere.cpp:54: warning: comparison between signed and unsigned integer expressions litere.cpp:61: warning: comparison between signed and unsigned integer expressions litere.cpp:69: warning: comparison between signed and unsigned integer expressions litere.cpp:73: warning: comparison between signed and unsigned integer expressions litere.cpp:31: warning: unused variable `int x' /tmp/ccSA4CDg.o(.text+0xd9): In function `main': : the `gets' function is dangerous and should not be used.