expresie.cpp: In function `int main()': expresie.cpp:24: warning: comparison between signed and unsigned integer expressions expresie.cpp:34: warning: comparison between signed and unsigned integer expressions expresie.cpp:43: warning: comparison between signed and unsigned integer expressions expresie.cpp:53: warning: comparison between signed and unsigned integer expressions expresie.cpp:62: warning: comparison between signed and unsigned integer expressions expresie.cpp:22: warning: unused variable `unsigned int j' expresie.cpp:22: warning: `unsigned int poz' might be used uninitialized in this function