festival.cpp: In function `void citire()': festival.cpp:29: warning: comparison between signed and unsigned integer expressions festival.cpp:31: warning: name lookup of `i' changed festival.cpp:21: warning: matches this `i' under ISO standard rules festival.cpp:29: warning: matches this `i' under old rules festival.cpp: In function `void bt(int)': festival.cpp:51: warning: comparison between signed and unsigned integer expressions festival.cpp:56: warning: comparison between signed and unsigned integer expressions /tmp/ccwu5i6d.o(.text+0x7d): In function `citire()': : the `gets' function is dangerous and should not be used.