foo.cpp: In function 'int main()':
foo.cpp:62:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
foo.cpp:67:29: error: 'memset' was not declared in this scope
foo.cpp:74:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
foo.cpp:78:22: warning: unknown conversion type character 'l' in format [-Wformat]
foo.cpp:78:22: warning: too many arguments for format [-Wformat-extra-args]