cluburi.cpp: In function 'int main()': cluburi.cpp:37: warning: comparison between signed and unsigned integer expressions cluburi.cpp:46: warning: comparison between signed and unsigned integer expressions cluburi.cpp:61: warning: name lookup of 'i' changed cluburi.cpp:11: warning: matches this 'i' under ISO standard rules cluburi.cpp:55: warning: matches this 'i' under old rules