cartonas.cpp: In function `int main()': cartonas.cpp:18: warning: comparison between signed and unsigned integer expressions cartonas.cpp:22: warning: comparison between signed and unsigned integer expressions cartonas.cpp:23: warning: comparison between signed and unsigned integer expressions cartonas.cpp:27: warning: comparison between signed and unsigned integer expressions cartonas.cpp:28: warning: comparison between signed and unsigned integer expressions cartonas.cpp:38: warning: comparison between signed and unsigned integer expressions cartonas.cpp:45: warning: comparison between signed and unsigned integer expressions cartonas.cpp:60: warning: comparison between signed and unsigned integer expressions cartonas.cpp:63: warning: comparison between signed and unsigned integer expressions cartonas.cpp:64: warning: comparison between signed and unsigned integer expressions cartonas.cpp:71: warning: comparison between signed and unsigned integer expressions cartonas.cpp:72: warning: comparison between signed and unsigned integer expressions cartonas.cpp:76: warning: comparison between signed and unsigned integer expressions