criptmat.cpp: In function `int main()': criptmat.cpp:10: warning: long int format, int arg (arg 2) criptmat.cpp:15: warning: long int format, int arg (arg 2) criptmat.cpp:17: warning: comparison between signed and unsigned integer expressions criptmat.cpp:24: warning: comparison between signed and unsigned integer expressions criptmat.cpp:30:2: warning: no newline at end of file