rj.cpp: In function 'int main()': rj.cpp:39: warning: comparison between signed and unsigned integer expressions rj.cpp:33: warning: 'p3' may be used uninitialized in this function rj.cpp:33: warning: 'p2' may be used uninitialized in this function rj.cpp:33: warning: 'p1' may be used uninitialized in this function rj.cpp:33: warning: 'p4' may be used uninitialized in this function rj.cpp:73: warning: 'l' may be used uninitialized in this function rj.cpp:73: warning: 'c' may be used uninitialized in this function